Finding the Fourth Proportional to 2,339.31, 3,229.41 and 1,455.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.31 : 3,229.41 = 1,455.40 : x
2. Step 2: Convert to fraction form
   2,339.31/3,229.41 = 1,455.40/x
3. Step 3: Cross multiply
   2,339.31x = 3,229.41 × 1,455.40
4. Step 4: Simplify right side
   2,339.31x = 4,700,083.31
5. Step 5: Solve for x
   x = 4,700,083.31/2,339.31
6. Step 6: Final answer
   x = 2,009.18