1. The problem is to find the square root of 1539, written as $\sqrt{1539}$.\n\n2. First, check if 1539 is a perfect square by finding factors or estimating.\n\n3. Estimate: $39^2 = 1521$ and $40^2 = 1600$. Since 1539 is between 1521 and 1600, $\sqrt{1539}$ is between 39 and 40.\n\n4. To get a more precise value, use a calculator or approximate: $\sqrt{1539} \approx 39.224$ (rounded to three decimal places).\n\n5. Therefore, the square root of 1539 is approximately $39.224$.