At the end of iteration 1 the voltages at the buses are:

V1= 
    1.04  
pu


V2= 
    1.0190887 + 0.0463655i  
pu


V3= 
    1.0280236 - 0.0870264i  
pu


V4= 
    1.0250453 - 0.0092291i  
pu