Finding the Fourth Proportional to 2,619.24, 3,614.52 and 1,440.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.24 : 3,614.52 = 1,440.28 : x
2. Step 2: Convert to fraction form
   2,619.24/3,614.52 = 1,440.28/x
3. Step 3: Cross multiply
   2,619.24x = 3,614.52 × 1,440.28
4. Step 4: Simplify right side
   2,619.24x = 5,205,930.78
5. Step 5: Solve for x
   x = 5,205,930.78/2,619.24
6. Step 6: Final answer
   x = 1,987.58