Finding the Fourth Proportional to 2,559.39, 3,532.17 and 1,440.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.39 : 3,532.17 = 1,440.38 : x
2. Step 2: Convert to fraction form
   2,559.39/3,532.17 = 1,440.38/x
3. Step 3: Cross multiply
   2,559.39x = 3,532.17 × 1,440.38
4. Step 4: Simplify right side
   2,559.39x = 5,087,649.36
5. Step 5: Solve for x
   x = 5,087,649.36/2,559.39
6. Step 6: Final answer
   x = 1,987.84