Salaries of B, C, D and E are in the ratio of 2 ∶ 3 ∶ 4 ∶ 5 respectively. Their salaries are increased by 20 percent, 30 percent, 40 percent and 50 percent respectively. If the increased salary of D is Rs. 560, then what is the sum of the original salaries of B, C, D and E ?