Job Interview Follow Up

I interviewed for a new job the second week of August. It went well and I anticipate a second interview. They told me I would know something in three weeks. I have not heard anything and this is the start of the 5th week. I did send a follow up email the day after the interview to which i got a response asking salary requirements. I sent another email last week asking if any decisions had been made and got no response. Is it appropriate to call the hiring manager to ask for an update?

I received an offer from another employer but this is company is my first choice by far.