Finding the Fourth Proportional to 1,196.82, 1,795.72 and 648.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.82 : 1,795.72 = 648.36 : x
2. Step 2: Convert to fraction form
   1,196.82/1,795.72 = 648.36/x
3. Step 3: Cross multiply
   1,196.82x = 1,795.72 × 648.36
4. Step 4: Simplify right side
   1,196.82x = 1,164,273.02
5. Step 5: Solve for x
   x = 1,164,273.02/1,196.82
6. Step 6: Final answer
   x = 972.81