Finding the Fourth Proportional to 3,956.82, 5,460.81 and 2,188.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.82 : 5,460.81 = 2,188.56 : x
2. Step 2: Convert to fraction form
   3,956.82/5,460.81 = 2,188.56/x
3. Step 3: Cross multiply
   3,956.82x = 5,460.81 × 2,188.56
4. Step 4: Simplify right side
   3,956.82x = 11,951,310.33
5. Step 5: Solve for x
   x = 11,951,310.33/3,956.82
6. Step 6: Final answer
   x = 3,020.43