Finding the Fourth Proportional to 2,546.91, 3,820.91 and 791.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.91 : 3,820.91 = 791.87 : x
2. Step 2: Convert to fraction form
   2,546.91/3,820.91 = 791.87/x
3. Step 3: Cross multiply
   2,546.91x = 3,820.91 × 791.87
4. Step 4: Simplify right side
   2,546.91x = 3,025,640.94
5. Step 5: Solve for x
   x = 3,025,640.94/2,546.91
6. Step 6: Final answer
   x = 1,187.97