Finding the Fourth Proportional to 2,328.17, 3,489.82 and 866.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.17 : 3,489.82 = 866.72 : x
2. Step 2: Convert to fraction form
   2,328.17/3,489.82 = 866.72/x
3. Step 3: Cross multiply
   2,328.17x = 3,489.82 × 866.72
4. Step 4: Simplify right side
   2,328.17x = 3,024,703.35
5. Step 5: Solve for x
   x = 3,024,703.35/2,328.17
6. Step 6: Final answer
   x = 1,299.18