Finding the Fourth Proportional to 2,139.56, 3,208.14 and 752.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.56 : 3,208.14 = 752.52 : x
2. Step 2: Convert to fraction form
   2,139.56/3,208.14 = 752.52/x
3. Step 3: Cross multiply
   2,139.56x = 3,208.14 × 752.52
4. Step 4: Simplify right side
   2,139.56x = 2,414,189.51
5. Step 5: Solve for x
   x = 2,414,189.51/2,139.56
6. Step 6: Final answer
   x = 1,128.36