If $$\frac{\left[\left(4.625-\frac{13}{18}\times\frac{9}{26}\right)\div\frac{x}{4}+(2.5\div1.25)\div6.75\right]\div1\frac{53}{68}}{\left(\frac{1}{2}-0.375\right)\div0.125+\left(\frac{5}{6}-\frac{7}{12}\right)\div(0.358-1.4796\div13.7)}=\frac{17}{27}$$ then $$x=$$ ______.

TO BE FILLED - the printed expression contains no $$x$$ and its computed value is not $$\frac{17}{27}$$, so the statement must be re-read from the paper before the answer is filled in. The denominator does simplify neatly, since $$(0.5 - 0.375) \div 0.125 = 1$$ and $$\frac{1}{4} \div (0.358 - 0.108) = 1$$, giving 2.