Finding the Fourth Proportional to 2,055.16, 3,082.68 and 668.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.16 : 3,082.68 = 668.56 : x
2. Step 2: Convert to fraction form
   2,055.16/3,082.68 = 668.56/x
3. Step 3: Cross multiply
   2,055.16x = 3,082.68 × 668.56
4. Step 4: Simplify right side
   2,055.16x = 2,060,956.54
5. Step 5: Solve for x
   x = 2,060,956.54/2,055.16
6. Step 6: Final answer
   x = 1,002.82