Finding the Fourth Proportional to 2,040.55, 2,815.98 and 1,109.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.55 : 2,815.98 = 1,109.05 : x
2. Step 2: Convert to fraction form
   2,040.55/2,815.98 = 1,109.05/x
3. Step 3: Cross multiply
   2,040.55x = 2,815.98 × 1,109.05
4. Step 4: Simplify right side
   2,040.55x = 3,123,042.99
5. Step 5: Solve for x
   x = 3,123,042.99/2,040.55
6. Step 6: Final answer
   x = 1,530.49