Finding the Fourth Proportional to 2,339.77, 3,228.88 and 1,291.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.77 : 3,228.88 = 1,291.83 : x
2. Step 2: Convert to fraction form
   2,339.77/3,228.88 = 1,291.83/x
3. Step 3: Cross multiply
   2,339.77x = 3,228.88 × 1,291.83
4. Step 4: Simplify right side
   2,339.77x = 4,171,160.82
5. Step 5: Solve for x
   x = 4,171,160.82/2,339.77
6. Step 6: Final answer
   x = 1,782.72