Finding the Fourth Proportional to 907,196.97, 1,251,931.94 and 493,735.31

Step by Step Solution

1. Step 1: Write the proportion equation
   907,196.97 : 1,251,931.94 = 493,735.31 : x
2. Step 2: Convert to fraction form
   907,196.97/1,251,931.94 = 493,735.31/x
3. Step 3: Cross multiply
   907,196.97x = 1,251,931.94 × 493,735.31
4. Step 4: Simplify right side
   907,196.97x = 618,123,002,312.72
5. Step 5: Solve for x
   x = 618,123,002,312.72/907,196.97
6. Step 6: Final answer
   x = 681,354.79