I have an Easter Cactus. The leaves are going yellow and the soil is dry.
Your Easter Cactus may be under watered. During the spring and flowering period keep the soil thoroughly moist, but after flowering water only enough to keep the soil from drying out completely. Do this for a brief rest period about two or three weeks, then water moderately allowing the top half inch of the soil only to dry out.
Your plant may also need to be repotted into a slightly larger pot (check to see if the roots are root bound, i.e. sticking together in a solid mass), it may be nutrient deficient (add fertilizer according to the instructions on the package), or it may be getting too little light or too cold drafts where it is located.