Finding the Fourth Proportional to 800,788.10, 1,105,087.69 and 438,212.04

Step by Step Solution

1. Step 1: Write the proportion equation
   800,788.10 : 1,105,087.69 = 438,212.04 : x
2. Step 2: Convert to fraction form
   800,788.10/1,105,087.69 = 438,212.04/x
3. Step 3: Cross multiply
   800,788.10x = 1,105,087.69 × 438,212.04
4. Step 4: Simplify right side
   800,788.10x = 484,262,729,918.26
5. Step 5: Solve for x
   x = 484,262,729,918.26/800,788.10
6. Step 6: Final answer
   x = 604,732.68