I no idea how correct instlling CyberGraphX in AmigaOS 4.1 FE
You don't. OS 4 comes with its own RTG solution, you cannot just replace it with CyberGraphX.
(CyberGraphX version 4 and below is for AmigaOS 3, 68k systems, versions above are integrated in MorphOS on PowerPC)
However, the OS4 RTG has a CyberGraphX compatibility layer and any software written for CyberGraphX v3 (at least) should also work on OS4. How all the 3D stuff plays into this, I have no idea.