Fundamental analysis is very effective at forecasting economic conditions, but not necessarily exact market prices. Studying GDP forecasts or employment reports can give you a fairly clear picture of an economy's health and the forces at work behind it. But you still need a method to translate that into specific trade entry and exit points.
The bridge between fundamental data and a specific trading strategy usually comes from a trader model. These models use current and historical empirical data to estimate future prices and translate those into specific trades.