Finding the Fourth Proportional to 2,559.03, 3,531.84 and 1,440.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.03 : 3,531.84 = 1,440.06 : x
2. Step 2: Convert to fraction form
   2,559.03/3,531.84 = 1,440.06/x
3. Step 3: Cross multiply
   2,559.03x = 3,531.84 × 1,440.06
4. Step 4: Simplify right side
   2,559.03x = 5,086,061.51
5. Step 5: Solve for x
   x = 5,086,061.51/2,559.03
6. Step 6: Final answer
   x = 1,987.50