To find the next number in the series, let’s examine the pattern between the numbers:
- The difference between 4 and 1 is 3.
- The difference between 10 and 4 is 6.
- The difference between 19 and 10 is 9.
- The difference between 31 and 19 is 12.
The differences we found: 3, 6, 9, 12 are increasing by 3 each time. If we continue this pattern, the next difference should be 15.
Now, we add this difference to the last number in the series:
- 31 + 15 = 46.
Therefore, the next number in the series is 46.