Finding the Fourth Proportional to 2,619.22, 3,614.61 and 1,440.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.22 : 3,614.61 = 1,440.33 : x
2. Step 2: Convert to fraction form
   2,619.22/3,614.61 = 1,440.33/x
3. Step 3: Cross multiply
   2,619.22x = 3,614.61 × 1,440.33
4. Step 4: Simplify right side
   2,619.22x = 5,206,231.22
5. Step 5: Solve for x
   x = 5,206,231.22/2,619.22
6. Step 6: Final answer
   x = 1,987.70