The annual % yield on VTI and VTSAX should be about the same. It could be off by a little if VTI is trading for something a bit different than its underlying value. But if you have $10k of VTI and $10k of VTSAX, the total dollar amount of dividend received for each should be about the same.
You can setup your account to have VTI automatically be reinvested for you. It will buy fractional shares for you as well.
The price of one share of VTI and one share of VTSAX are not important. The total dollar amount you have is what matters. One just owns slightly smaller amounts of each company's stocks than the other.
Fidelity's dividend isn't "better", it's just that the dividends are released 2x per year instead of 4x (if what you say is correct). So for $10k invested in each, the total dividend yield for the year should be similar for both (with differences for expense ratio, tracking error, underlying benchmark differences if any, etc)