Finding the Fourth Proportional to 903,061.17, 1,246,238.87 and 495,200.25

Step by Step Solution

1. Step 1: Write the proportion equation
   903,061.17 : 1,246,238.87 = 495,200.25 : x
2. Step 2: Convert to fraction form
   903,061.17/1,246,238.87 = 495,200.25/x
3. Step 3: Cross multiply
   903,061.17x = 1,246,238.87 × 495,200.25
4. Step 4: Simplify right side
   903,061.17x = 617,137,797,507.72
5. Step 5: Solve for x
   x = 617,137,797,507.72/903,061.17
6. Step 6: Final answer
   x = 683,384.27