Finding the Fourth Proportional to 2,575.24, 3,553.80 and 1,440.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.24 : 3,553.80 = 1,440.89 : x
2. Step 2: Convert to fraction form
   2,575.24/3,553.80 = 1,440.89/x
3. Step 3: Cross multiply
   2,575.24x = 3,553.80 × 1,440.89
4. Step 4: Simplify right side
   2,575.24x = 5,120,643.77
5. Step 5: Solve for x
   x = 5,120,643.77/2,575.24
6. Step 6: Final answer
   x = 1,988.42