How to select records close to one in SQL?

I have a single table in database, with 开发者_StackOverflowa structure like:

Id |   Name   |     Money
--------------------------
1  |   Joe    |    34.50
2  |   Jane   |    12.55
3  |   Kate   |    55.21
4  |   George |    9.54
5  |   Hilary |    45.21
6  |   Jacob  |    32.00
7  |   Ginny  |    21.00

Now I want to select one specified record (knowing it's Id) and 3 others, closest to it (sorting by Money).

So it's something like:

SELECT * FROM test ORDER BY money LIMIT 4;

Just with closest (by Money) to selected row's money results.

Sort by the absolute difference:

SELECT * FROM test
ORDER BY ABS(Money - (
    SELECT Money FROM test WHERE Id = 2
)) 
LIMIT 4;

SELECT * FROM test where money>= order by money LIMIT 4;*

Ex: Select * from test where money >=21.00 order by money LIMIT 4;

This would be a simpler solution.