Finding the Fourth Proportional to 1,196.27, 1,796.39 and 808.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.27 : 1,796.39 = 808.78 : x
2. Step 2: Convert to fraction form
   1,196.27/1,796.39 = 808.78/x
3. Step 3: Cross multiply
   1,196.27x = 1,796.39 × 808.78
4. Step 4: Simplify right side
   1,196.27x = 1,452,871.28
5. Step 5: Solve for x
   x = 1,452,871.28/1,196.27
6. Step 6: Final answer
   x = 1,214.50