Corel 4.4 file format, pre CorelDRAW 5 from 1995

I have to modify a flight planning document I created in CorelDraw in 1995 that is still in use 25 years later! I attempt to open it: 'This file was last saved in version 4.4. Files from CorelDRAW 5 and earlier versions are no longer supported...'. However, I have the original boxed CorelDraw with license on 3.5" discs Windows 3.1 but not sure how this can help me unless I can download this for Win 10 and use my license somehow. I spent an entire evening on the Net and managed to convert it to a pdf thinking I could trace it but it was too distorted so useless! Any ideas...