Finding the Fourth Proportional to 2,431.27, 3,648.32 and 1,025.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.27 : 3,648.32 = 1,025.60 : x
2. Step 2: Convert to fraction form
   2,431.27/3,648.32 = 1,025.60/x
3. Step 3: Cross multiply
   2,431.27x = 3,648.32 × 1,025.60
4. Step 4: Simplify right side
   2,431.27x = 3,741,728.01
5. Step 5: Solve for x
   x = 3,741,728.01/2,431.27
6. Step 6: Final answer
   x = 1,539.00