Finding the Fourth Proportional to 2,137,658.10, 3,205,730.82 and 621,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137,658.10 : 3,205,730.82 = 621,025.50 : x
2. Step 2: Convert to fraction form
   2,137,658.10/3,205,730.82 = 621,025.50/x
3. Step 3: Cross multiply
   2,137,658.10x = 3,205,730.82 × 621,025.50
4. Step 4: Simplify right side
   2,137,658.10x = 1,990,840,585,355.91
5. Step 5: Solve for x
   x = 1,990,840,585,355.91/2,137,658.10
6. Step 6: Final answer
   x = 931,318.52