Finding the Fourth Proportional to 3,680.82, 5,078.70 and 2,189.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.82 : 5,078.70 = 2,189.16 : x
2. Step 2: Convert to fraction form
   3,680.82/5,078.70 = 2,189.16/x
3. Step 3: Cross multiply
   3,680.82x = 5,078.70 × 2,189.16
4. Step 4: Simplify right side
   3,680.82x = 11,118,086.89
5. Step 5: Solve for x
   x = 11,118,086.89/3,680.82
6. Step 6: Final answer
   x = 3,020.55