Finding the Fourth Proportional to 2,339.55, 3,228.49 and 1,291.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.55 : 3,228.49 = 1,291.59 : x
2. Step 2: Convert to fraction form
   2,339.55/3,228.49 = 1,291.59/x
3. Step 3: Cross multiply
   2,339.55x = 3,228.49 × 1,291.59
4. Step 4: Simplify right side
   2,339.55x = 4,169,885.40
5. Step 5: Solve for x
   x = 4,169,885.40/2,339.55
6. Step 6: Final answer
   x = 1,782.35