Finding the Fourth Proportional to 2,055.25, 3,083.18 and 668.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.25 : 3,083.18 = 668.12 : x
2. Step 2: Convert to fraction form
   2,055.25/3,083.18 = 668.12/x
3. Step 3: Cross multiply
   2,055.25x = 3,083.18 × 668.12
4. Step 4: Simplify right side
   2,055.25x = 2,059,934.22
5. Step 5: Solve for x
   x = 2,059,934.22/2,055.25
6. Step 6: Final answer
   x = 1,002.28