Finding the Fourth Proportional to 2,139.52, 2,952.84 and 1,255.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.52 : 2,952.84 = 1,255.18 : x
2. Step 2: Convert to fraction form
   2,139.52/2,952.84 = 1,255.18/x
3. Step 3: Cross multiply
   2,139.52x = 2,952.84 × 1,255.18
4. Step 4: Simplify right side
   2,139.52x = 3,706,345.71
5. Step 5: Solve for x
   x = 3,706,345.71/2,139.52
6. Step 6: Final answer
   x = 1,732.33