Finding the Fourth Proportional to 2,426.29, 3,639.26 and 866.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.29 : 3,639.26 = 866.12 : x
2. Step 2: Convert to fraction form
   2,426.29/3,639.26 = 866.12/x
3. Step 3: Cross multiply
   2,426.29x = 3,639.26 × 866.12
4. Step 4: Simplify right side
   2,426.29x = 3,152,013.34
5. Step 5: Solve for x
   x = 3,152,013.34/2,426.29
6. Step 6: Final answer
   x = 1,299.11