Finding the Fourth Proportional to 2,665,815.31, 3,998,312.29 and 868,694.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665,815.31 : 3,998,312.29 = 868,694.23 : x
2. Step 2: Convert to fraction form
   2,665,815.31/3,998,312.29 = 868,694.23/x
3. Step 3: Cross multiply
   2,665,815.31x = 3,998,312.29 × 868,694.23
4. Step 4: Simplify right side
   2,665,815.31x = 3,473,310,816,061.09
5. Step 5: Solve for x
   x = 3,473,310,816,061.09/2,665,815.31
6. Step 6: Final answer
   x = 1,302,907.52