Solution:The pattern followed here is :(1st number) × 4 = 2nd number
(588 - 2352) → (588 × 4 = 2352)
(378 - 1512) → (378 × 4 = 1512)
(648 - 2592) → (648 × 4 = 2592)
But,
(278 - 1122) → (278 × 4 = 1112 ≠ 1122)
Hence, (278 - 1122) is the correct answer.