Finding the Fourth Proportional to 3,255.56, 4,888.10 and 2,148.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,255.56 : 4,888.10 = 2,148.28 : x
2. Step 2: Convert to fraction form
   3,255.56/4,888.10 = 2,148.28/x
3. Step 3: Cross multiply
   3,255.56x = 4,888.10 × 2,148.28
4. Step 4: Simplify right side
   3,255.56x = 10,501,007.47
5. Step 5: Solve for x
   x = 10,501,007.47/3,255.56
6. Step 6: Final answer
   x = 3,225.56