3124:(3•504-4•307)+10403•101

To solve the expression \( 3124:(3\cdot 504 - 4\cdot 307) + 10403 \cdot 101 \), we will follow the order of operations step by step:

1. Calculate \( 3 \cdot 504 \): \[ 3 \cdot 504 = 1512 \]

2. Calculate \( 4 \cdot 307 \): \[ 4 \cdot 307 = 1228 \]

3. Subtract the results: \[ 1512 - 1228 = 284 \]

4. Divide \( 3124 \) by the result: \[ 3124 \div 284 = 11 \]

5. Calculate \( 10403 \cdot 101 \): \[ 10403 \cdot 101 = 1050303 \]

6. Finally, add both results together: \[ 11 + 1050303 = 1050314 \]

Thus, the final answer is: \[ \boxed{1050314} \]