Finding the Fourth Proportional to 2,047.72, 3,071.17 and 798.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.72 : 3,071.17 = 798.31 : x
2. Step 2: Convert to fraction form
   2,047.72/3,071.17 = 798.31/x
3. Step 3: Cross multiply
   2,047.72x = 3,071.17 × 798.31
4. Step 4: Simplify right side
   2,047.72x = 2,451,745.72
5. Step 5: Solve for x
   x = 2,451,745.72/2,047.72
6. Step 6: Final answer
   x = 1,197.31