Finding the Fourth Proportional to 2,281.73, 3,422.69 and 638.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.73 : 3,422.69 = 638.37 : x
2. Step 2: Convert to fraction form
   2,281.73/3,422.69 = 638.37/x
3. Step 3: Cross multiply
   2,281.73x = 3,422.69 × 638.37
4. Step 4: Simplify right side
   2,281.73x = 2,184,939.42
5. Step 5: Solve for x
   x = 2,184,939.42/2,281.73
6. Step 6: Final answer
   x = 957.58