Finding the Fourth Proportional to 3,233.59, 4,462.40 and 3,121.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,233.59 : 4,462.40 = 3,121.83 : x
2. Step 2: Convert to fraction form
   3,233.59/4,462.40 = 3,121.83/x
3. Step 3: Cross multiply
   3,233.59x = 4,462.40 × 3,121.83
4. Step 4: Simplify right side
   3,233.59x = 13,930,849.74
5. Step 5: Solve for x
   x = 13,930,849.74/3,233.59
6. Step 6: Final answer
   x = 4,308.17