The four correct inequalities that can be used to find the solution to the absolute value inequality 3 ≤ x + 2 ≤ 6 are:
1. x + 2 ≤ 6
2. x + 2 ≥ -6
3. x ≥ 1
4. |x ≤ 4
These four inequalities cover all possible cases and combinations to represent the solution to the given absolute value inequality.