Finding the Fourth Proportional to 1,811.48, 2,499.86 and 1,025.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.48 : 2,499.86 = 1,025.51 : x
2. Step 2: Convert to fraction form
   1,811.48/2,499.86 = 1,025.51/x
3. Step 3: Cross multiply
   1,811.48x = 2,499.86 × 1,025.51
4. Step 4: Simplify right side
   1,811.48x = 2,563,626.30
5. Step 5: Solve for x
   x = 2,563,626.30/1,811.48
6. Step 6: Final answer
   x = 1,415.21