Finding the Fourth Proportional to 2,175,819.62, 3,262,957.14 and 638,385.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175,819.62 : 3,262,957.14 = 638,385.94 : x
2. Step 2: Convert to fraction form
   2,175,819.62/3,262,957.14 = 638,385.94/x
3. Step 3: Cross multiply
   2,175,819.62x = 3,262,957.14 × 638,385.94
4. Step 4: Simplify right side
   2,175,819.62x = 2,083,025,960,998.61
5. Step 5: Solve for x
   x = 2,083,025,960,998.61/2,175,819.62
6. Step 6: Final answer
   x = 957,352.32