Finding the Fourth Proportional to 2,654.28, 3,981.46 and 805.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.28 : 3,981.46 = 805.42 : x
2. Step 2: Convert to fraction form
   2,654.28/3,981.46 = 805.42/x
3. Step 3: Cross multiply
   2,654.28x = 3,981.46 × 805.42
4. Step 4: Simplify right side
   2,654.28x = 3,206,747.51
5. Step 5: Solve for x
   x = 3,206,747.51/2,654.28
6. Step 6: Final answer
   x = 1,208.14