Finding the Fourth Proportional to 2,055.83, 3,083.08 and 668.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.83 : 3,083.08 = 668.80 : x
2. Step 2: Convert to fraction form
   2,055.83/3,083.08 = 668.80/x
3. Step 3: Cross multiply
   2,055.83x = 3,083.08 × 668.80
4. Step 4: Simplify right side
   2,055.83x = 2,061,958.67
5. Step 5: Solve for x
   x = 2,061,958.67/2,055.83
6. Step 6: Final answer
   x = 1,002.98