Finding the Fourth Proportional to 2,654.52, 3,981.57 and 805.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.52 : 3,981.57 = 805.65 : x
2. Step 2: Convert to fraction form
   2,654.52/3,981.57 = 805.65/x
3. Step 3: Cross multiply
   2,654.52x = 3,981.57 × 805.65
4. Step 4: Simplify right side
   2,654.52x = 3,207,751.87
5. Step 5: Solve for x
   x = 3,207,751.87/2,654.52
6. Step 6: Final answer
   x = 1,208.41