Finding the Fourth Proportional to 846.86, 1,168.43 and 809.39

Step by Step Solution

1. Step 1: Write the proportion equation
   846.86 : 1,168.43 = 809.39 : x
2. Step 2: Convert to fraction form
   846.86/1,168.43 = 809.39/x
3. Step 3: Cross multiply
   846.86x = 1,168.43 × 809.39
4. Step 4: Simplify right side
   846.86x = 945,714.43
5. Step 5: Solve for x
   x = 945,714.43/846.86
6. Step 6: Final answer
   x = 1,116.74