Finding the Fourth Proportional to 2,619.06, 3,614.32 and 1,440.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.06 : 3,614.32 = 1,440.10 : x
2. Step 2: Convert to fraction form
   2,619.06/3,614.32 = 1,440.10/x
3. Step 3: Cross multiply
   2,619.06x = 3,614.32 × 1,440.10
4. Step 4: Simplify right side
   2,619.06x = 5,204,982.23
5. Step 5: Solve for x
   x = 5,204,982.23/2,619.06
6. Step 6: Final answer
   x = 1,987.35