The reality TV personality is set to wed boyfriend of nearly a year Jeremiah Brent, Berkus's rep confirmed to PEOPLE Wednesday.
Berkus, 41, popped the question Monday and the couple celebrated the happy news with friends in Peru atop the famed Machu Picchu.
Based in New York City and Los Angeles, his latest book is The Things That Matter out now. Berkus rose to national prominence after he was invited in 2002 to do a makeover on a space for The Oprah Winfrey Show.
His own program, The Nate Berkus Show, aired from 2010 to 2012. Berkus's longtime partner, Fernando Bengoechea, was swept to his death when the couple was vacationing during the 2004 Indian Ocean tsunami.