Finding the Fourth Proportional to 2,540.28, 3,505.50 and 1,436.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.28 : 3,505.50 = 1,436.28 : x
2. Step 2: Convert to fraction form
   2,540.28/3,505.50 = 1,436.28/x
3. Step 3: Cross multiply
   2,540.28x = 3,505.50 × 1,436.28
4. Step 4: Simplify right side
   2,540.28x = 5,034,879.54
5. Step 5: Solve for x
   x = 5,034,879.54/2,540.28
6. Step 6: Final answer
   x = 1,982.02