Finding the Fourth Proportional to 2,619.01, 3,614.18 and 1,440.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.01 : 3,614.18 = 1,440.10 : x
2. Step 2: Convert to fraction form
   2,619.01/3,614.18 = 1,440.10/x
3. Step 3: Cross multiply
   2,619.01x = 3,614.18 × 1,440.10
4. Step 4: Simplify right side
   2,619.01x = 5,204,780.62
5. Step 5: Solve for x
   x = 5,204,780.62/2,619.01
6. Step 6: Final answer
   x = 1,987.31