Finding the Fourth Proportional to 2,654.34, 3,981.69 and 805.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.34 : 3,981.69 = 805.60 : x
2. Step 2: Convert to fraction form
   2,654.34/3,981.69 = 805.60/x
3. Step 3: Cross multiply
   2,654.34x = 3,981.69 × 805.60
4. Step 4: Simplify right side
   2,654.34x = 3,207,649.46
5. Step 5: Solve for x
   x = 3,207,649.46/2,654.34
6. Step 6: Final answer
   x = 1,208.46