Finding the Fourth Proportional to 2,339.80, 3,229.28 and 1,455.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.80 : 3,229.28 = 1,455.89 : x
2. Step 2: Convert to fraction form
   2,339.80/3,229.28 = 1,455.89/x
3. Step 3: Cross multiply
   2,339.80x = 3,229.28 × 1,455.89
4. Step 4: Simplify right side
   2,339.80x = 4,701,476.46
5. Step 5: Solve for x
   x = 4,701,476.46/2,339.80
6. Step 6: Final answer
   x = 2,009.35