Finding the Fourth Proportional to 3,679.42, 5,078.27 and 2,188.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.42 : 5,078.27 = 2,188.16 : x
2. Step 2: Convert to fraction form
   3,679.42/5,078.27 = 2,188.16/x
3. Step 3: Cross multiply
   3,679.42x = 5,078.27 × 2,188.16
4. Step 4: Simplify right side
   3,679.42x = 11,112,067.28
5. Step 5: Solve for x
   x = 11,112,067.28/3,679.42
6. Step 6: Final answer
   x = 3,020.06