Finding the Fourth Proportional to 2,559.38, 3,532.26 and 1,440.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.38 : 3,532.26 = 1,440.37 : x
2. Step 2: Convert to fraction form
   2,559.38/3,532.26 = 1,440.37/x
3. Step 3: Cross multiply
   2,559.38x = 3,532.26 × 1,440.37
4. Step 4: Simplify right side
   2,559.38x = 5,087,761.34
5. Step 5: Solve for x
   x = 5,087,761.34/2,559.38
6. Step 6: Final answer
   x = 1,987.89