Finding the Fourth Proportional to 1,811.12, 2,499.27 and 1,025.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.12 : 2,499.27 = 1,025.21 : x
2. Step 2: Convert to fraction form
   1,811.12/2,499.27 = 1,025.21/x
3. Step 3: Cross multiply
   1,811.12x = 2,499.27 × 1,025.21
4. Step 4: Simplify right side
   1,811.12x = 2,562,276.60
5. Step 5: Solve for x
   x = 2,562,276.60/1,811.12
6. Step 6: Final answer
   x = 1,414.75