Finding the Fourth Proportional to 1,391.24, 1,919.84 and 793.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.24 : 1,919.84 = 793.87 : x
2. Step 2: Convert to fraction form
   1,391.24/1,919.84 = 793.87/x
3. Step 3: Cross multiply
   1,391.24x = 1,919.84 × 793.87
4. Step 4: Simplify right side
   1,391.24x = 1,524,094.61
5. Step 5: Solve for x
   x = 1,524,094.61/1,391.24
6. Step 6: Final answer
   x = 1,095.49