Finding the Fourth Proportional to 1,792.47, 2,689.34 and 805.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,792.47 : 2,689.34 = 805.20 : x
2. Step 2: Convert to fraction form
   1,792.47/2,689.34 = 805.20/x
3. Step 3: Cross multiply
   1,792.47x = 2,689.34 × 805.20
4. Step 4: Simplify right side
   1,792.47x = 2,165,456.57
5. Step 5: Solve for x
   x = 2,165,456.57/1,792.47
6. Step 6: Final answer
   x = 1,208.09