Finding the Fourth Proportional to 3,227.41, 4,834.77 and 2,128.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,227.41 : 4,834.77 = 2,128.42 : x
2. Step 2: Convert to fraction form
   3,227.41/4,834.77 = 2,128.42/x
3. Step 3: Cross multiply
   3,227.41x = 4,834.77 × 2,128.42
4. Step 4: Simplify right side
   3,227.41x = 10,290,421.16
5. Step 5: Solve for x
   x = 10,290,421.16/3,227.41
6. Step 6: Final answer
   x = 3,188.45