Finding the Fourth Proportional to 2,339.43, 3,228.78 and 1,779

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.43 : 3,228.78 = 1,779 : x
2. Step 2: Convert to fraction form
   2,339.43/3,228.78 = 1,779/x
3. Step 3: Cross multiply
   2,339.43x = 3,228.78 × 1,779
4. Step 4: Simplify right side
   2,339.43x = 5,743,999.62
5. Step 5: Solve for x
   x = 5,743,999.62/2,339.43
6. Step 6: Final answer
   x = 2,455.30