如何比较MutableArray与string？

应用获取的Mutable数组如下：

 MutableArray1:(
       "22.298166 , 73.165809",
       "22.300598 , 73.167183",
       "22.298101 , 73.166188",
       "22.298128 , 73.166194"
       "22.298130 , 73.166194"
      )

我想要用array1中的最后三个数据比较数据为22.298130 , 73.166194的NSString，怎么样能实现？

谢谢

   if([Array1 count]>3)
    {
       for (int i = [Array1 count] - 4; i < [Array1 count]; i++) {
            if ([[Array1 objectAtIndex:i] isEqualToString:@"22.298130 , 73.166194"]) {
                NSLog (@"True");
                //自定义代码
            }
        }
    }