Given the task definition and input, reply with output. In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.

Sentence1: Fred is brand new to exercising and just joined a gym. Sentence2: He was amazing at how expensive a personal trainer was. Sentence3: He wanted to get into shape but couldn't afford the rates. Sentence4: He found personal trainer routines online for free.
He was happy with his decision.