The following sentences should be included in a summary of the text:
- Fitch's boats cost too much to make.
- John Fitch combined old methods of constructing boats with new technology to create the first steamboats.
- It wasn’t until after his death that Robert Fulton created a commercially successful steamboat and became known as “the father of steam navigation.”
However, the most concise and focused summary statement reflecting the main ideas in relation to the question would be:
John Fitch combined old methods of constructing boats with new technology to create the first steamboats.