Is.     = %
Of.       100
Is the form I use for ratios
X.           = 77
1634.89.   100
It's 77% because that's the precentage you would have left over from getting taxed.
Cross multiply
100x= 125886.53
Divide both sides by 100
X= 1258.8653
So your take home pay would be $1258.87