Finding the Fourth Proportional to 2,572.86, 3,550.53 and 1,393.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.86 : 3,550.53 = 1,393.92 : x
2. Step 2: Convert to fraction form
   2,572.86/3,550.53 = 1,393.92/x
3. Step 3: Cross multiply
   2,572.86x = 3,550.53 × 1,393.92
4. Step 4: Simplify right side
   2,572.86x = 4,949,154.78
5. Step 5: Solve for x
   x = 4,949,154.78/2,572.86
6. Step 6: Final answer
   x = 1,923.60