Step 1: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).
4.70.769230769
Step 2: We moved the decimal point 2 spaces to the right. Therefore, the exponent on base 10 will be positive 2.Now we know that the:
Mantissa = 4.70769230769
Exponent = 2
So, the solution is:
$$470.769230769 = \color{blue}{ 4.70769230769} \cdot 10^{ \color{red}{ 2 }}$$