Brian Steinberg Senior TV EditorComcast said first-quarter profit rose due largely to increases in business at its cable and Sky operations, while its NBCUniversal business continued to recover from the results of the coronavirus pandemic.The Philadelphia media giant said first quarter profit rose 55% to $3.33 billion, or 71 cents a share, compared with$2.1 billion, or $4.6 billion in the year-earlier period.