Finding the Fourth Proportional to 2,654.38, 3,981.42 and 805.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.38 : 3,981.42 = 805.48 : x
2. Step 2: Convert to fraction form
   2,654.38/3,981.42 = 805.48/x
3. Step 3: Cross multiply
   2,654.38x = 3,981.42 × 805.48
4. Step 4: Simplify right side
   2,654.38x = 3,206,954.18
5. Step 5: Solve for x
   x = 3,206,954.18/2,654.38
6. Step 6: Final answer
   x = 1,208.17