Finding the Fourth Proportional to 3,471.43, 4,789.21 and 2,142.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,471.43 : 4,789.21 = 2,142.83 : x
2. Step 2: Convert to fraction form
   3,471.43/4,789.21 = 2,142.83/x
3. Step 3: Cross multiply
   3,471.43x = 4,789.21 × 2,142.83
4. Step 4: Simplify right side
   3,471.43x = 10,262,462.86
5. Step 5: Solve for x
   x = 10,262,462.86/3,471.43
6. Step 6: Final answer
   x = 2,956.26