Finding the Fourth Proportional to 2,581.52, 3,871.52 and 1,120.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.52 : 3,871.52 = 1,120.32 : x
2. Step 2: Convert to fraction form
   2,581.52/3,871.52 = 1,120.32/x
3. Step 3: Cross multiply
   2,581.52x = 3,871.52 × 1,120.32
4. Step 4: Simplify right side
   2,581.52x = 4,337,341.29
5. Step 5: Solve for x
   x = 4,337,341.29/2,581.52
6. Step 6: Final answer
   x = 1,680.15