Finding the Fourth Proportional to 2,619.38, 3,614.82 and 1,440.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.38 : 3,614.82 = 1,440.48 : x
2. Step 2: Convert to fraction form
   2,619.38/3,614.82 = 1,440.48/x
3. Step 3: Cross multiply
   2,619.38x = 3,614.82 × 1,440.48
4. Step 4: Simplify right side
   2,619.38x = 5,207,084.07
5. Step 5: Solve for x
   x = 5,207,084.07/2,619.38
6. Step 6: Final answer
   x = 1,987.91