Finding the Fourth Proportional to 1,196.32, 1,790.89 and 646.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.32 : 1,790.89 = 646.84 : x
2. Step 2: Convert to fraction form
   1,196.32/1,790.89 = 646.84/x
3. Step 3: Cross multiply
   1,196.32x = 1,790.89 × 646.84
4. Step 4: Simplify right side
   1,196.32x = 1,158,413.47
5. Step 5: Solve for x
   x = 1,158,413.47/1,196.32
6. Step 6: Final answer
   x = 968.31