I design craft sheets for people to download and print

I love xara and have used it for many years It is my main software except for the occasional use of serif craft artist.

The website i design for requires the jpg of the craft sheet to be uploaded with a size of 1176x1664 at 150dpi for a4 printing.

I have for almost 2 years now been designing a page size of 1176x1664 and then exporting at 150dpi which gives the pixel size as larger and then i have to resize in xnview.

why can i not export it at 150dpi - 1176x1664

thanks in advance for replies