Finding the Fourth Proportional to 2,581.24, 3,871.98 and 1,281.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.24 : 3,871.98 = 1,281.88 : x
2. Step 2: Convert to fraction form
   2,581.24/3,871.98 = 1,281.88/x
3. Step 3: Cross multiply
   2,581.24x = 3,871.98 × 1,281.88
4. Step 4: Simplify right side
   2,581.24x = 4,963,413.72
5. Step 5: Solve for x
   x = 4,963,413.72/2,581.24
6. Step 6: Final answer
   x = 1,922.88