Finding the Fourth Proportional to 2,140.52, 2,949.30 and 1,440.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.52 : 2,949.30 = 1,440.68 : x
2. Step 2: Convert to fraction form
   2,140.52/2,949.30 = 1,440.68/x
3. Step 3: Cross multiply
   2,140.52x = 2,949.30 × 1,440.68
4. Step 4: Simplify right side
   2,140.52x = 4,248,982.78
5. Step 5: Solve for x
   x = 4,248,982.78/2,140.52
6. Step 6: Final answer
   x = 1,985.03