Finding the Fourth Proportional to 800,871.25, 1,105,187.55 and 438,287.83

Step by Step Solution

1. Step 1: Write the proportion equation
   800,871.25 : 1,105,187.55 = 438,287.83 : x
2. Step 2: Convert to fraction form
   800,871.25/1,105,187.55 = 438,287.83/x
3. Step 3: Cross multiply
   800,871.25x = 1,105,187.55 × 438,287.83
4. Step 4: Simplify right side
   800,871.25x = 484,390,253,032.52
5. Step 5: Solve for x
   x = 484,390,253,032.52/800,871.25
6. Step 6: Final answer
   x = 604,829.12