Answer: 123
Step-by-step explanation: TO solve problems like this, you should assign a variable to the lowest number, lets just say n. From here, since we know the numbers are consecutive, we can see that the numbers are n, n+1, and n+2. Therefore:
n(first number) + (n+1)(second number) +(n+2) (3rd number) =366
>n+n+1+n+2=366
3n+3=366
3n=363
n=121
n+2=123