Finding the Fourth Proportional to 3,280.82, 4,921.33 and 1,089.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,280.82 : 4,921.33 = 1,089.48 : x
2. Step 2: Convert to fraction form
   3,280.82/4,921.33 = 1,089.48/x
3. Step 3: Cross multiply
   3,280.82x = 4,921.33 × 1,089.48
4. Step 4: Simplify right side
   3,280.82x = 5,361,687.88
5. Step 5: Solve for x
   x = 5,361,687.88/3,280.82
6. Step 6: Final answer
   x = 1,634.25