Finding the Fourth Proportional to 2,054.38, 3,081.62 and 667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.38 : 3,081.62 = 667.72 : x
2. Step 2: Convert to fraction form
   2,054.38/3,081.62 = 667.72/x
3. Step 3: Cross multiply
   2,054.38x = 3,081.62 × 667.72
4. Step 4: Simplify right side
   2,054.38x = 2,057,654.28
5. Step 5: Solve for x
   x = 2,057,654.28/2,054.38
6. Step 6: Final answer
   x = 1,001.59