Finding the Fourth Proportional to 2,665,399.70, 3,998,096.48 and 868,280.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665,399.70 : 3,998,096.48 = 868,280.30 : x
2. Step 2: Convert to fraction form
   2,665,399.70/3,998,096.48 = 868,280.30/x
3. Step 3: Cross multiply
   2,665,399.70x = 3,998,096.48 × 868,280.30
4. Step 4: Simplify right side
   2,665,399.70x = 3,471,468,411,083.34
5. Step 5: Solve for x
   x = 3,471,468,411,083.34/2,665,399.70
6. Step 6: Final answer
   x = 1,302,419.45