Finding the Fourth Proportional to 3,227.68, 4,833.31 and 2,128.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,227.68 : 4,833.31 = 2,128.71 : x
2. Step 2: Convert to fraction form
   3,227.68/4,833.31 = 2,128.71/x
3. Step 3: Cross multiply
   3,227.68x = 4,833.31 × 2,128.71
4. Step 4: Simplify right side
   3,227.68x = 10,288,715.33
5. Step 5: Solve for x
   x = 10,288,715.33/3,227.68
6. Step 6: Final answer
   x = 3,187.65