Finding the Fourth Proportional to 2,040.50, 2,815.90 and 1,109

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.50 : 2,815.90 = 1,109 : x
2. Step 2: Convert to fraction form
   2,040.50/2,815.90 = 1,109/x
3. Step 3: Cross multiply
   2,040.50x = 2,815.90 × 1,109
4. Step 4: Simplify right side
   2,040.50x = 3,122,833.10
5. Step 5: Solve for x
   x = 3,122,833.10/2,040.50
6. Step 6: Final answer
   x = 1,530.43