Finding the Fourth Proportional to 1,811.19, 2,499.46 and 1,025.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.19 : 2,499.46 = 1,025.39 : x
2. Step 2: Convert to fraction form
   1,811.19/2,499.46 = 1,025.39/x
3. Step 3: Cross multiply
   1,811.19x = 2,499.46 × 1,025.39
4. Step 4: Simplify right side
   1,811.19x = 2,562,922.41
5. Step 5: Solve for x
   x = 2,562,922.41/1,811.19
6. Step 6: Final answer
   x = 1,415.05