Finding the Fourth Proportional to 2,559.54, 3,532.18 and 1,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.54 : 3,532.18 = 1,440.50 : x
2. Step 2: Convert to fraction form
   2,559.54/3,532.18 = 1,440.50/x
3. Step 3: Cross multiply
   2,559.54x = 3,532.18 × 1,440.50
4. Step 4: Simplify right side
   2,559.54x = 5,088,105.29
5. Step 5: Solve for x
   x = 5,088,105.29/2,559.54
6. Step 6: Final answer
   x = 1,987.90