Finding the Fourth Proportional to 947,397.69, 1,307,500.25 and 517,742.91

Step by Step Solution

1. Step 1: Write the proportion equation
   947,397.69 : 1,307,500.25 = 517,742.91 : x
2. Step 2: Convert to fraction form
   947,397.69/1,307,500.25 = 517,742.91/x
3. Step 3: Cross multiply
   947,397.69x = 1,307,500.25 × 517,742.91
4. Step 4: Simplify right side
   947,397.69x = 676,948,981,672.01
5. Step 5: Solve for x
   x = 676,948,981,672.01/947,397.69
6. Step 6: Final answer
   x = 714,535.18