Finding the Fourth Proportional to 903,061.20, 1,354,665.42 and 453,550.80

Step by Step Solution

1. Step 1: Write the proportion equation
   903,061.20 : 1,354,665.42 = 453,550.80 : x
2. Step 2: Convert to fraction form
   903,061.20/1,354,665.42 = 453,550.80/x
3. Step 3: Cross multiply
   903,061.20x = 1,354,665.42 × 453,550.80
4. Step 4: Simplify right side
   903,061.20x = 614,409,584,973.34
5. Step 5: Solve for x
   x = 614,409,584,973.34/903,061.20
6. Step 6: Final answer
   x = 680,363.17