Add, Multiply, Root.

Algebra Level 2

\[ \sqrt{1 + 1\times2\times3\times4} = 5 \\ \sqrt{1 + 2\times3\times4\times5} = 11 \\ \sqrt{1 + 3\times4\times5\times6} = 19 \\ \sqrt{1 + 4\times5\times6\times7} = 29 \]

Find \( \sqrt{1 + 204\times205\times206\times207} \).