what's the width with frame size being 4.5k
{'header': ['Frame size', 'Width', 'Height', 'Mpix', 'Aspect Ratio', 'max. fps', 'lowest possible REDCODE at 24 fps'], 'page_title': 'Red Digital Cinema Camera Company', 'page_id': '', 'types': ['text', 'real', 'real', 'text', 'text', 'real', 'text'], 'id': '1-1251878-1', 'section_title': 'NAB 2007', 'caption': 'NAB 2007', 'rows': [['4.5K', '4480', '1920', '8.6', '2.33:1', '30', '8:1'], ['4K 16:9', '4096', '2304', '9.4', '1.78:1', '30', '8:1'], ['4K', '4096', '2048', '8.4', '2:1', '30', '8:1'], ['4K UHDTV', '3840', '2160', '8.3', '1.78:1', '30', '8:1'], ['4K ANA', '2816', '2304', '6.5', '2.44:1', '30', '8:1'], ['3K', '3072', '1728', '5.3', '1.78:1', '60', '8:1'], ['3K', '3072', '1536', '4.7', '2:1', '60', '8:1'], ['3K ANA', '2112', '1728', '3.8', '2.44:1', '60', '8:1'], ['2K', '2048', '1152', '2.4', '1.78:1', '120', '8:1'], ['2K', '2048', '1024', '2.1', '2:1', '120', '8:1']], 'name': 'table_1251878_1'}