You need simple vector math. Get forward vector, multiply it by distance and add actor location. You will get location in front of actor. Here I showed a picture of it.
Hi, Am a beginner to unreal engine and this is my first time posting anything, but I was wonder if there is any way to make one actor appear to be in-front of another actor when the first actor is actually behind the 2nd. Am trying to make a portal for my game and am trying to create this illusion that my character is entering the portal when in reality, hes just going through the portal mesh while the camera locks onto the portal. Basically, I would like to know how i could make a certain actor/pawn always appear in-front of another actor. Any help would be appreciated 
Thanks for the replay!
So that will teleport my player but what about making the illusion? Am trying to make the player look like hes entering when hes actually just going through the portal. Is there any way to make this illusion?