Finding the Fourth Proportional to 3,681.27, 5,077.89 and 2,188.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.27 : 5,077.89 = 2,188.17 : x
2. Step 2: Convert to fraction form
   3,681.27/5,077.89 = 2,188.17/x
3. Step 3: Cross multiply
   3,681.27x = 5,077.89 × 2,188.17
4. Step 4: Simplify right side
   3,681.27x = 11,111,286.56
5. Step 5: Solve for x
   x = 11,111,286.56/3,681.27
6. Step 6: Final answer
   x = 3,018.33