Finding the Fourth Proportional to 2,091.85, 3,138.69 and 793.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.85 : 3,138.69 = 793.02 : x
2. Step 2: Convert to fraction form
   2,091.85/3,138.69 = 793.02/x
3. Step 3: Cross multiply
   2,091.85x = 3,138.69 × 793.02
4. Step 4: Simplify right side
   2,091.85x = 2,489,043.94
5. Step 5: Solve for x
   x = 2,489,043.94/2,091.85
6. Step 6: Final answer
   x = 1,189.88