Creating, Displaying a Custom X axis on chart

Greetings fellow Excel users,

I'm wondering if you can help me out with a problem that has been driving me crazy.

This is my data

RNum SNum SaNum Result
424625 1 1 391.824
424625 2 1 440.62
424650 1 1 449.178
424678 1 1 330.65
424689 1 1 424.56
424689 7 1 336.63
424689 19 1 227.89

I want to create an XY chart with Result in the Y axis and a concatenated Run Number,Sequence Number,Sample Number in the X Axis

I've tried to use custom axes,but I'm having no luck at all.

I've attached a pictures of what i want my data to look like and what i seem to be getting and would appreciate it if you guys could help me out

Thanks!
Picture3.jpg