Finding the Fourth Proportional to 1,871.24, 2,581.52 and 1,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.24 : 2,581.52 = 1,085.12 : x
2. Step 2: Convert to fraction form
   1,871.24/2,581.52 = 1,085.12/x
3. Step 3: Cross multiply
   1,871.24x = 2,581.52 × 1,085.12
4. Step 4: Simplify right side
   1,871.24x = 2,801,258.98
5. Step 5: Solve for x
   x = 2,801,258.98/1,871.24
6. Step 6: Final answer
   x = 1,497.01