Finding the Fourth Proportional to 1,811.55, 2,499.90 and 1,025.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.55 : 2,499.90 = 1,025.73 : x
2. Step 2: Convert to fraction form
   1,811.55/2,499.90 = 1,025.73/x
3. Step 3: Cross multiply
   1,811.55x = 2,499.90 × 1,025.73
4. Step 4: Simplify right side
   1,811.55x = 2,564,222.43
5. Step 5: Solve for x
   x = 2,564,222.43/1,811.55
6. Step 6: Final answer
   x = 1,415.49