Finding the Fourth Proportional to 3,943.28, 5,442.76 and 2,329.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,943.28 : 5,442.76 = 2,329.59 : x
2. Step 2: Convert to fraction form
   3,943.28/5,442.76 = 2,329.59/x
3. Step 3: Cross multiply
   3,943.28x = 5,442.76 × 2,329.59
4. Step 4: Simplify right side
   3,943.28x = 12,679,422.59
5. Step 5: Solve for x
   x = 12,679,422.59/3,943.28
6. Step 6: Final answer
   x = 3,215.45