Mitrovic, who joined the Cottagers on transfer deadline day from Newcastle United on loan until the end of the campaign, scored twice against Sheffield United on Tuesday to bring his goal tally to five goals in his last four games.
Tom Cairney scored the other goal as Fulham beat the Blades 3-0 to secure an 11th victory in their last 14 Championship games.
“He is a quality player, he has started well with us,” Jokanovic said of Mitrovic. “He is a proper striker that we have been looking for.
“He scored two goals and did a great job for us. He can help us in the defensive set-pieces too, he is a great signing for us.
“We are fourth in the Championship, we are playing with confidence, we know we can beat all the teams in the division.
“We have to be mentally strong and push hard for the next step though. It’s important we keep winning the games and the stats are less important.”