The country's foreign exchange reserves rose by$ 1. 492 billion to reach$ 641. 008 billion in the week ended October 15, RBI data showed on Friday.In the previous week ended October 8, the reserves had increased by$ 2. 039 billion to$ 639. 516 billion.... The reserves had touched a lifetime high of$ 642. 453 billion in the week ended September 3, 2021.In the reporting week ended October 15, the rise in the forex kitty was mainly on account of an increase in foreign currency assets( FCAs), a maj