Finding the Fourth Proportional to 1,811.39, 2,499.54 and 1,025.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.39 : 2,499.54 = 1,025.29 : x
2. Step 2: Convert to fraction form
   1,811.39/2,499.54 = 1,025.29/x
3. Step 3: Cross multiply
   1,811.39x = 2,499.54 × 1,025.29
4. Step 4: Simplify right side
   1,811.39x = 2,562,740.87
5. Step 5: Solve for x
   x = 2,562,740.87/1,811.39
6. Step 6: Final answer
   x = 1,414.79