Finding the Fourth Proportional to 3,139.30, 4,332.24 and 1,742.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.30 : 4,332.24 = 1,742.05 : x
2. Step 2: Convert to fraction form
   3,139.30/4,332.24 = 1,742.05/x
3. Step 3: Cross multiply
   3,139.30x = 4,332.24 × 1,742.05
4. Step 4: Simplify right side
   3,139.30x = 7,546,978.69
5. Step 5: Solve for x
   x = 7,546,978.69/3,139.30
6. Step 6: Final answer
   x = 2,404.03