How to divide a set of numbers into 4 equal sum groups

I got this close using Evolutionary Solver, changing col C to minimize max - min:

Row\Col	A	B	C	D	E	F	G	H	I
1	Wafer	Qty	Stack	1	2	3	4
2				0	0	0	0
3	wf01	522	2	0	522	0	0		D3: =D2 + (ROUND($C3, 0)=D$1)*$B3
4	wf02	526	4	0	522	0	526
5	wf03	542	2	0	1064	0	526
6	wf04	530	3	0	1064	530	526
7	wf05	579	1	579	1064	530	526
8	wf06	529	4	579	1064	530	1055
9	wf07	483	3	579	1064	1013	1055
10	wf08	477	3	579	1064	1490	1055
11	wf09	578	2	579	1642	1490	1055
12	wf10	558	1	1137	1642	1490	1055
13	wf11	522	3	1137	1642	2012	1055
14	wf12	430	3	1137	1642	2442	1055
15	wf13	571	4	1137	1642	2442	1626
16	wf14	554	2	1137	2196	2442	1626
17	wf15	504	2	1137	2700	2442	1626
18	wf16	528	4	1137	2700	2442	2154
19	wf17	579	2	1137	3279	2442	2154
20	wf18	560	1	1697	3279	2442	2154
21	wf19	478	3	1697	3279	2920	2154
22	wf20	572	4	1697	3279	2920	2726
23	wf21	522	4	1697	3279	2920	3248
24	wf22	499	3	1697	3279	3419	3248
25	wf23	565	1	2262	3279	3419	3248
26	wf24	531	1	2793	3279	3419	3248	max-min
27	wf25	557	1	3350	3279	3419	3248	171