Finding the Fourth Proportional to 2,559.02, 3,531.42 and 1,440.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.02 : 3,531.42 = 1,440.16 : x
2. Step 2: Convert to fraction form
   2,559.02/3,531.42 = 1,440.16/x
3. Step 3: Cross multiply
   2,559.02x = 3,531.42 × 1,440.16
4. Step 4: Simplify right side
   2,559.02x = 5,085,801.00
5. Step 5: Solve for x
   x = 5,085,801.00/2,559.02
6. Step 6: Final answer
   x = 1,987.41