To find the number that, when added to -1.14, equals 2.43, you can set up the equation:
\[ x + (-1.14) = 2.43 \]
This simplifies to:
\[ x - 1.14 = 2.43 \]
Now, add 1.14 to both sides:
\[ x = 2.43 + 1.14 \]
Calculating the right side:
\[ x = 3.57 \]
So, the answer is:
\( 3.57 \)