Finding the Fourth Proportional to 3,180.30, 4,771.58 and 2,142.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,180.30 : 4,771.58 = 2,142.29 : x
2. Step 2: Convert to fraction form
   3,180.30/4,771.58 = 2,142.29/x
3. Step 3: Cross multiply
   3,180.30x = 4,771.58 × 2,142.29
4. Step 4: Simplify right side
   3,180.30x = 10,222,073.55
5. Step 5: Solve for x
   x = 10,222,073.55/3,180.30
6. Step 6: Final answer
   x = 3,214.19