Finding the Fourth Proportional to 1,811.25, 2,499.53 and 1,025.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.25 : 2,499.53 = 1,025.28 : x
2. Step 2: Convert to fraction form
   1,811.25/2,499.53 = 1,025.28/x
3. Step 3: Cross multiply
   1,811.25x = 2,499.53 × 1,025.28
4. Step 4: Simplify right side
   1,811.25x = 2,562,718.12
5. Step 5: Solve for x
   x = 2,562,718.12/1,811.25
6. Step 6: Final answer
   x = 1,414.89