Finding the Fourth Proportional to 1,196.51, 1,651.15 and 718.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.51 : 1,651.15 = 718.03 : x
2. Step 2: Convert to fraction form
   1,196.51/1,651.15 = 718.03/x
3. Step 3: Cross multiply
   1,196.51x = 1,651.15 × 718.03
4. Step 4: Simplify right side
   1,196.51x = 1,185,578.20
5. Step 5: Solve for x
   x = 1,185,578.20/1,196.51
6. Step 6: Final answer
   x = 990.87