Finding the Fourth Proportional to 3,678.82, 5,518.33 and 1,081.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.82 : 5,518.33 = 1,081.76 : x
2. Step 2: Convert to fraction form
   3,678.82/5,518.33 = 1,081.76/x
3. Step 3: Cross multiply
   3,678.82x = 5,518.33 × 1,081.76
4. Step 4: Simplify right side
   3,678.82x = 5,969,478.36
5. Step 5: Solve for x
   x = 5,969,478.36/3,678.82
6. Step 6: Final answer
   x = 1,622.66