Finding the Fourth Proportional to 3,255.50, 4,872.77 and 2,145.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,255.50 : 4,872.77 = 2,145.83 : x
2. Step 2: Convert to fraction form
   3,255.50/4,872.77 = 2,145.83/x
3. Step 3: Cross multiply
   3,255.50x = 4,872.77 × 2,145.83
4. Step 4: Simplify right side
   3,255.50x = 10,456,136.05
5. Step 5: Solve for x
   x = 10,456,136.05/3,255.50
6. Step 6: Final answer
   x = 3,211.84