Minneapolis-based Wealth Enhancement Group, which has an office in West Des Moines, announced it has signed a definitive agreement to acquire Planning Solutions Group LLC, a hybrid independent financial advisory business based in Fulton, Md., with more than $1.3 billion in combined client assets. The acquisition is the 12th since the end of 2013 for the firm, which is seeking to establish itself as a leading national wealth management and financial planning brand through both organic growth and targeted acquisitions. Wealth Enhancement Group and its registered investment adviser, Wealth Enhancement Advisory Services, have about $11.3 billion in client brokerage and advisory assets as of April 30.