In the right angled triangle, the marked angle is 30°, the marked right angled side has a length of x, and the diagonal side has a length of sqrt{10}. Consider the adjacent figure:

Solve for the exact value of x.
Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: In the right angled triangle, the marked angle is 30°, the marked right angled side has a length of x, and the diagonal side has a length of sqrt{10}. Consider the adjacent figure:

Solve for the exact value of x.
Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: In the right angled triangle, the marked angle is 30°, the marked right angled side has a length of x, and the diagonal side has a length of sqrt{10}. Consider the adjacent figure:

Solve for the exact value of x.