You can't set an arbitrary format string or precision for command window output; only the few selectable choices given by the format command.
If you want/need a specific format, you have to output the data with a format string via fprintf or num2str or the like:
>> easting_northing =[1000,1000;1063.5,922.72]
>> fprintf('%10.4f %10.4f\n',easting_northing')
NB: Newcomers often get confused and mistake the limited number of significant digits shown at command window with the precision of the data itself -- note the display format does not in any way affect the internal storage precision that remains at full double precision. That doesn't seem to be the case here, but thought worth mentioning for any who may stumble upon the thread later...