Finding the Fourth Proportional to 870,881.92, 1,201,606.72 and 508,098.72

Step by Step Solution

1. Step 1: Write the proportion equation
   870,881.92 : 1,201,606.72 = 508,098.72 : x
2. Step 2: Convert to fraction form
   870,881.92/1,201,606.72 = 508,098.72/x
3. Step 3: Cross multiply
   870,881.92x = 1,201,606.72 × 508,098.72
4. Step 4: Simplify right side
   870,881.92x = 610,534,836,375.40
5. Step 5: Solve for x
   x = 610,534,836,375.40/870,881.92
6. Step 6: Final answer
   x = 701,053.52