1955 in roman numerals is MCMLV whereas 747 is DCCXLVII. 1955 – 747 = 1208. Therefore, 1208 should be added to 747 to get 1955. Now, to convert 1208 in roman numbers, we will express it in its expanded form, that is, 1208 = 1000 + 100 + 100 + 5 + 1 + 1 + 1 = M + C + C + V + I + I + I = MCCVIII.