Finding the Fourth Proportional to 2,339.50, 3,228.52 and 1,291.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.50 : 3,228.52 = 1,291.64 : x
2. Step 2: Convert to fraction form
   2,339.50/3,228.52 = 1,291.64/x
3. Step 3: Cross multiply
   2,339.50x = 3,228.52 × 1,291.64
4. Step 4: Simplify right side
   2,339.50x = 4,170,085.57
5. Step 5: Solve for x
   x = 4,170,085.57/2,339.50
6. Step 6: Final answer
   x = 1,782.47