Finding the Fourth Proportional to 899,363.27, 1,241,118.71 and 491,467.62

Step by Step Solution

1. Step 1: Write the proportion equation
   899,363.27 : 1,241,118.71 = 491,467.62 : x
2. Step 2: Convert to fraction form
   899,363.27/1,241,118.71 = 491,467.62/x
3. Step 3: Cross multiply
   899,363.27x = 1,241,118.71 × 491,467.62
4. Step 4: Simplify right side
   899,363.27x = 609,969,656,083.83
5. Step 5: Solve for x
   x = 609,969,656,083.83/899,363.27
6. Step 6: Final answer
   x = 678,223.89