Dilution of Solutions Problem

[ConfuzeredN]

After being stuck on this ridiculous problem for about an hour and a half... (im on a 3 wk break and my grade is slipping so im taking my time) I have come for help. This problem comes from my Raymond Chang Chemistry 7e textbook. Chapter 4 number 70. Please help!

4.70) A 46.2ml, 0.568 M calcium nitrate solution is mixed with 80.5 ml of 1.396M calcium nitrate solution. Calculate the concentration of the final solution.

I know the answer is 1.09 M and I've tried just about anything, but i can't seem to get there!