Finding the Fourth Proportional to 800,870.25, 1,105,186.17 and 438,286.83

Step by Step Solution

1. Step 1: Write the proportion equation
   800,870.25 : 1,105,186.17 = 438,286.83 : x
2. Step 2: Convert to fraction form
   800,870.25/1,105,186.17 = 438,286.83/x
3. Step 3: Cross multiply
   800,870.25x = 1,105,186.17 × 438,286.83
4. Step 4: Simplify right side
   800,870.25x = 484,388,544,259.58
5. Step 5: Solve for x
   x = 484,388,544,259.58/800,870.25
6. Step 6: Final answer
   x = 604,827.74