Rohit, Sohan and Neeraj enter into a business by making an investment in the ratio of 6 : 5 : 7 respectively. After 4 months Rohit and Sohan withdraw 1/6^th and 25% of their initial investment respectively. After eight months from the starting of business Neeraj added 1/7^th of his initial investment. If at the end of one year the profit share of Neeraj is Rs. 3800 more than Sohan, then find the profit share of Rohit?