Finding the Fourth Proportional to 3,281.82, 4,920.89 and 1,089.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,281.82 : 4,920.89 = 1,089.96 : x
2. Step 2: Convert to fraction form
   3,281.82/4,920.89 = 1,089.96/x
3. Step 3: Cross multiply
   3,281.82x = 4,920.89 × 1,089.96
4. Step 4: Simplify right side
   3,281.82x = 5,363,567.81
5. Step 5: Solve for x
   x = 5,363,567.81/3,281.82
6. Step 6: Final answer
   x = 1,634.33