Drain the juice from the pineapple and save. Refrigerate the slices. Use the pineapple juice to mix the Jello following the directions on the package. If needed add water to make the correct amount of liquid.

Divide the Jello into the four bowls. Refrigerate until it begins to set. Remove and place a single ring of pineapple into each bowl. Refrigerate until completely set. At serving time add the whipped topping, sliced fruit and serve.