It is not possible to determine the value of x without knowing the upper limit of the series of numbers being added together. If the series of numbers being added together is finite, then x can be calculated by adding up all of the numbers in the series.
For example, if x is equal to the sum of the first ten positive integers (1+2+3+4+5+6+7+8+9+10), then x would be equal to 55.
To find the sum of the first n positive integers, you can use the formula:
x = (n * (n + 1)) / 2
where n is the number of integers in the series. For example, if n is equal to 4, then the formula would be:
x = (4 * (4 + 1)) / 2 = (4 * 5) / 2 = 20 / 2 = 10
This formula can be used to quickly and easily calculate the sum of the first n positive integers for any value of n.