Finding the Fourth Proportional to 3,355.69, 5,028.40 and 2,255.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,355.69 : 5,028.40 = 2,255.98 : x
2. Step 2: Convert to fraction form
   3,355.69/5,028.40 = 2,255.98/x
3. Step 3: Cross multiply
   3,355.69x = 5,028.40 × 2,255.98
4. Step 4: Simplify right side
   3,355.69x = 11,343,969.83
5. Step 5: Solve for x
   x = 11,343,969.83/3,355.69
6. Step 6: Final answer
   x = 3,380.52