Finding the Fourth Proportional to 2,054.50, 3,081.46 and 667.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.50 : 3,081.46 = 667.85 : x
2. Step 2: Convert to fraction form
   2,054.50/3,081.46 = 667.85/x
3. Step 3: Cross multiply
   2,054.50x = 3,081.46 × 667.85
4. Step 4: Simplify right side
   2,054.50x = 2,057,949.72
5. Step 5: Solve for x
   x = 2,057,949.72/2,054.50
6. Step 6: Final answer
   x = 1,001.68