Finding the Fourth Proportional to 2,572.88, 3,550.57 and 1,393.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.88 : 3,550.57 = 1,393.95 : x
2. Step 2: Convert to fraction form
   2,572.88/3,550.57 = 1,393.95/x
3. Step 3: Cross multiply
   2,572.88x = 3,550.57 × 1,393.95
4. Step 4: Simplify right side
   2,572.88x = 4,949,307.80
5. Step 5: Solve for x
   x = 4,949,307.80/2,572.88
6. Step 6: Final answer
   x = 1,923.65