If Rs. 782 be divided into three parts, proportional to 12:23:34 , then the first part is?

$Rs.782*\frac{6}{23}$

Given ratio = $\frac{1}{2}:\frac{2}{3}:\frac{3}{4}$= 6:8:9

1st part =  $Rs.782*\frac{6}{23}$ = Rs. 204