Finding the Fourth Proportional to 1,622.34, 2,238.57 and 923.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.34 : 2,238.57 = 923.58 : x
2. Step 2: Convert to fraction form
   1,622.34/2,238.57 = 923.58/x
3. Step 3: Cross multiply
   1,622.34x = 2,238.57 × 923.58
4. Step 4: Simplify right side
   1,622.34x = 2,067,498.48
5. Step 5: Solve for x
   x = 2,067,498.48/1,622.34
6. Step 6: Final answer
   x = 1,274.39