Finding the Fourth Proportional to 2,559.34, 3,531.92 and 1,440.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.34 : 3,531.92 = 1,440.27 : x
2. Step 2: Convert to fraction form
   2,559.34/3,531.92 = 1,440.27/x
3. Step 3: Cross multiply
   2,559.34x = 3,531.92 × 1,440.27
4. Step 4: Simplify right side
   2,559.34x = 5,086,918.42
5. Step 5: Solve for x
   x = 5,086,918.42/2,559.34
6. Step 6: Final answer
   x = 1,987.59