Finding the Fourth Proportional to 2,544.50, 3,511.41 and 1,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,544.50 : 3,511.41 = 1,440.50 : x
2. Step 2: Convert to fraction form
   2,544.50/3,511.41 = 1,440.50/x
3. Step 3: Cross multiply
   2,544.50x = 3,511.41 × 1,440.50
4. Step 4: Simplify right side
   2,544.50x = 5,058,186.11
5. Step 5: Solve for x
   x = 5,058,186.11/2,544.50
6. Step 6: Final answer
   x = 1,987.89