Finding the Fourth Proportional to 2,327.62, 3,491.16 and 866.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,327.62 : 3,491.16 = 866.61 : x
2. Step 2: Convert to fraction form
   2,327.62/3,491.16 = 866.61/x
3. Step 3: Cross multiply
   2,327.62x = 3,491.16 × 866.61
4. Step 4: Simplify right side
   2,327.62x = 3,025,474.17
5. Step 5: Solve for x
   x = 3,025,474.17/2,327.62
6. Step 6: Final answer
   x = 1,299.81