Finding the Fourth Proportional to 1,196.89, 1,649.97 and 864.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.89 : 1,649.97 = 864.79 : x
2. Step 2: Convert to fraction form
   1,196.89/1,649.97 = 864.79/x
3. Step 3: Cross multiply
   1,196.89x = 1,649.97 × 864.79
4. Step 4: Simplify right side
   1,196.89x = 1,426,873.43
5. Step 5: Solve for x
   x = 1,426,873.43/1,196.89
6. Step 6: Final answer
   x = 1,192.15