Finding the Fourth Proportional to 2,764.96, 4,147.41 and 817.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.96 : 4,147.41 = 817.18 : x
2. Step 2: Convert to fraction form
   2,764.96/4,147.41 = 817.18/x
3. Step 3: Cross multiply
   2,764.96x = 4,147.41 × 817.18
4. Step 4: Simplify right side
   2,764.96x = 3,389,180.50
5. Step 5: Solve for x
   x = 3,389,180.50/2,764.96
6. Step 6: Final answer
   x = 1,225.76