Finding the Fourth Proportional to 2,647.35, 3,971.06 and 798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.35 : 3,971.06 = 798.50 : x
2. Step 2: Convert to fraction form
   2,647.35/3,971.06 = 798.50/x
3. Step 3: Cross multiply
   2,647.35x = 3,971.06 × 798.50
4. Step 4: Simplify right side
   2,647.35x = 3,170,867.56
5. Step 5: Solve for x
   x = 3,170,867.56/2,647.35
6. Step 6: Final answer
   x = 1,197.75