Finding the Fourth Proportional to 2,139.27, 2,952.20 and 1,255.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.27 : 2,952.20 = 1,255.08 : x
2. Step 2: Convert to fraction form
   2,139.27/2,952.20 = 1,255.08/x
3. Step 3: Cross multiply
   2,139.27x = 2,952.20 × 1,255.08
4. Step 4: Simplify right side
   2,139.27x = 3,705,247.18
5. Step 5: Solve for x
   x = 3,705,247.18/2,139.27
6. Step 6: Final answer
   x = 1,732.01