Finding the Fourth Proportional to 2,339.82, 3,228.93 and 1,291.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.82 : 3,228.93 = 1,291.89 : x
2. Step 2: Convert to fraction form
   2,339.82/3,228.93 = 1,291.89/x
3. Step 3: Cross multiply
   2,339.82x = 3,228.93 × 1,291.89
4. Step 4: Simplify right side
   2,339.82x = 4,171,422.38
5. Step 5: Solve for x
   x = 4,171,422.38/2,339.82
6. Step 6: Final answer
   x = 1,782.80