Finding the Fourth Proportional to 3,139.86, 4,332.72 and 1,723.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.86 : 4,332.72 = 1,723.32 : x
2. Step 2: Convert to fraction form
   3,139.86/4,332.72 = 1,723.32/x
3. Step 3: Cross multiply
   3,139.86x = 4,332.72 × 1,723.32
4. Step 4: Simplify right side
   3,139.86x = 7,466,663.03
5. Step 5: Solve for x
   x = 7,466,663.03/3,139.86
6. Step 6: Final answer
   x = 2,378.02