Specific data finding by the equation

format long g
x= linspace(200,1400,10000000);
y= linspace(100,900,10000000);
z= linspace(7380,8046,10000000);
a=588545.909;
b=10167.688;
c=150;
T=a*x+b*y+c*z;
v=0.9*(T);

i need to know the values of x, y and z for which the T become 180800000 to 180900000? what will be the code. Its urgent.