Image 4 represents prophase. It has the spindle fibres start emerge from the centrosome. The nuclear envelop breaks down and chromosomes become visible.
Image 2 represents the second stage of mitosis which is metaphase. In this stage the chromosome are lined up at metaphase as shown.
Image 3 represents the third stage which is anaphase. In this stage the centromere split into two. Spindle fibers begin to elongate the cell.
Image 1 represents the fourth stage telophase of mitosis. In this stage the chromosomes arrive at opposite pole and begin to decondense.
