Finding the Fourth Proportional to 2,710.39, 4,065.78 and 1,324.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.39 : 4,065.78 = 1,324.88 : x
2. Step 2: Convert to fraction form
   2,710.39/4,065.78 = 1,324.88/x
3. Step 3: Cross multiply
   2,710.39x = 4,065.78 × 1,324.88
4. Step 4: Simplify right side
   2,710.39x = 5,386,670.61
5. Step 5: Solve for x
   x = 5,386,670.61/2,710.39
6. Step 6: Final answer
   x = 1,987.42