Finding the Fourth Proportional to 1,238.38, 1,854.48 and 622.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.38 : 1,854.48 = 622.37 : x
2. Step 2: Convert to fraction form
   1,238.38/1,854.48 = 622.37/x
3. Step 3: Cross multiply
   1,238.38x = 1,854.48 × 622.37
4. Step 4: Simplify right side
   1,238.38x = 1,154,179.69
5. Step 5: Solve for x
   x = 1,154,179.69/1,238.38
6. Step 6: Final answer
   x = 932.01