1. Move the decimal point to the left until you have a number between 1 and 10. In this case, we move the decimal point three places to the left: 4.0822

2. Count the number of places you moved the decimal point. We moved it three places.

3. Write the number you obtained in step 1 (4.0822) multiplied by 10 raised to the power of the number of places you moved the decimal point (3).

Therefore, 4082.2 in scientific notation is 4.0822 x 10³.