Finding the Fourth Proportional to 1,811.45, 2,499.89 and 1,103.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.45 : 2,499.89 = 1,103.18 : x
2. Step 2: Convert to fraction form
   1,811.45/2,499.89 = 1,103.18/x
3. Step 3: Cross multiply
   1,811.45x = 2,499.89 × 1,103.18
4. Step 4: Simplify right side
   1,811.45x = 2,757,816.15
5. Step 5: Solve for x
   x = 2,757,816.15/1,811.45
6. Step 6: Final answer
   x = 1,522.44