Finding the Fourth Proportional to 2,025.20, 3,040.31 and 1,329.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.20 : 3,040.31 = 1,329.69 : x
2. Step 2: Convert to fraction form
   2,025.20/3,040.31 = 1,329.69/x
3. Step 3: Cross multiply
   2,025.20x = 3,040.31 × 1,329.69
4. Step 4: Simplify right side
   2,025.20x = 4,042,663.16
5. Step 5: Solve for x
   x = 4,042,663.16/2,025.20
6. Step 6: Final answer
   x = 1,996.18