Finding the Fourth Proportional to 1,391.65, 1,920.51 and 794.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.65 : 1,920.51 = 794.27 : x
2. Step 2: Convert to fraction form
   1,391.65/1,920.51 = 794.27/x
3. Step 3: Cross multiply
   1,391.65x = 1,920.51 × 794.27
4. Step 4: Simplify right side
   1,391.65x = 1,525,408.28
5. Step 5: Solve for x
   x = 1,525,408.28/1,391.65
6. Step 6: Final answer
   x = 1,096.12