Answer:
The distance is

Step-by-step explanation:
From the question we are told that
The wavelength is

The distance of the screen is x = 4.80 m
The location of the fourth order bright fringe is y = 8.20 cm = 0.082 m
The order of the fringe is n = 4
Generally the position of a fringe with respect to the central fringe is mathematically represented as

Where d is the distance between the slits, so making d the subject

substituting values

