Finding the Fourth Proportional to 2,665,376.18, 3,998,061.29 and 868,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665,376.18 : 3,998,061.29 = 868,256.72 : x
2. Step 2: Convert to fraction form
   2,665,376.18/3,998,061.29 = 868,256.72/x
3. Step 3: Cross multiply
   2,665,376.18x = 3,998,061.29 × 868,256.72
4. Step 4: Simplify right side
   2,665,376.18x = 3,471,343,564,194.70
5. Step 5: Solve for x
   x = 3,471,343,564,194.70/2,665,376.18
6. Step 6: Final answer
   x = 1,302,384.11