Finding the Fourth Proportional to 912,049.27, 1,258,630.52 and 498,591.04

Step by Step Solution

1. Step 1: Write the proportion equation
   912,049.27 : 1,258,630.52 = 498,591.04 : x
2. Step 2: Convert to fraction form
   912,049.27/1,258,630.52 = 498,591.04/x
3. Step 3: Cross multiply
   912,049.27x = 1,258,630.52 × 498,591.04
4. Step 4: Simplify right side
   912,049.27x = 627,541,903,385.55
5. Step 5: Solve for x
   x = 627,541,903,385.55/912,049.27
6. Step 6: Final answer
   x = 688,057.02