Finding the Fourth Proportional to 3,227.90, 4,835.46 and 2,128.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,227.90 : 4,835.46 = 2,128.93 : x
2. Step 2: Convert to fraction form
   3,227.90/4,835.46 = 2,128.93/x
3. Step 3: Cross multiply
   3,227.90x = 4,835.46 × 2,128.93
4. Step 4: Simplify right side
   3,227.90x = 10,294,355.86
5. Step 5: Solve for x
   x = 10,294,355.86/3,227.90
6. Step 6: Final answer
   x = 3,189.18