Finding the Fourth Proportional to 800,761.98, 1,105,051.49 and 438,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   800,761.98 : 1,105,051.49 = 438,185.88 : x
2. Step 2: Convert to fraction form
   800,761.98/1,105,051.49 = 438,185.88/x
3. Step 3: Cross multiply
   800,761.98x = 1,105,051.49 × 438,185.88
4. Step 4: Simplify right side
   800,761.98x = 484,217,959,590.96
5. Step 5: Solve for x
   x = 484,217,959,590.96/800,761.98
6. Step 6: Final answer
   x = 604,696.49