Finding the Fourth Proportional to 1,391.08, 1,919.55 and 793.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.08 : 1,919.55 = 793.42 : x
2. Step 2: Convert to fraction form
   1,391.08/1,919.55 = 793.42/x
3. Step 3: Cross multiply
   1,391.08x = 1,919.55 × 793.42
4. Step 4: Simplify right side
   1,391.08x = 1,523,009.36
5. Step 5: Solve for x
   x = 1,523,009.36/1,391.08
6. Step 6: Final answer
   x = 1,094.84