Finding the Fourth Proportional to 647,424.10, 971,366.55 and 624,384.10

Step by Step Solution

1. Step 1: Write the proportion equation
   647,424.10 : 971,366.55 = 624,384.10 : x
2. Step 2: Convert to fraction form
   647,424.10/971,366.55 = 624,384.10/x
3. Step 3: Cross multiply
   647,424.10x = 971,366.55 × 624,384.10
4. Step 4: Simplify right side
   647,424.10x = 606,505,829,091.86
5. Step 5: Solve for x
   x = 606,505,829,091.86/647,424.10
6. Step 6: Final answer
   x = 936,798.35