Finding the Fourth Proportional to 2,546.27, 3,819.20 and 791.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.27 : 3,819.20 = 791.21 : x
2. Step 2: Convert to fraction form
   2,546.27/3,819.20 = 791.21/x
3. Step 3: Cross multiply
   2,546.27x = 3,819.20 × 791.21
4. Step 4: Simplify right side
   2,546.27x = 3,021,772.11
5. Step 5: Solve for x
   x = 3,021,772.11/2,546.27
6. Step 6: Final answer
   x = 1,186.74