Finding the Fourth Proportional to 3,143.34, 4,680.79 and 3,108.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,143.34 : 4,680.79 = 3,108.83 : x
2. Step 2: Convert to fraction form
   3,143.34/4,680.79 = 3,108.83/x
3. Step 3: Cross multiply
   3,143.34x = 4,680.79 × 3,108.83
4. Step 4: Simplify right side
   3,143.34x = 14,551,749.20
5. Step 5: Solve for x
   x = 14,551,749.20/3,143.34
6. Step 6: Final answer
   x = 4,629.39