Finding the Fourth Proportional to 2,091.71, 3,137.67 and 793.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.71 : 3,137.67 = 793.28 : x
2. Step 2: Convert to fraction form
   2,091.71/3,137.67 = 793.28/x
3. Step 3: Cross multiply
   2,091.71x = 3,137.67 × 793.28
4. Step 4: Simplify right side
   2,091.71x = 2,489,050.86
5. Step 5: Solve for x
   x = 2,489,050.86/2,091.71
6. Step 6: Final answer
   x = 1,189.96