ICX7450 stacking question

Hi  all – We have 3 x ICX7450 in a stack via the 10GB 4 port modules, Stack unit 1 is master then next is unit 2 and finally 3. Their stack priority values also descend. Now we need to add another switch to the stack which needs to be unit 4 but physically it needs to be placed inbetween unit 2 and 3. so the stack units would be 1, 2, 4 and 3. Is this possible and would it work? Requirement is due to physical locations in the DC. Any advice would be greatly appreciated. many thanks Ben