Finding the Fourth Proportional to 1,622.16, 2,238.72 and 923.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.16 : 2,238.72 = 923.52 : x
2. Step 2: Convert to fraction form
   1,622.16/2,238.72 = 923.52/x
3. Step 3: Cross multiply
   1,622.16x = 2,238.72 × 923.52
4. Step 4: Simplify right side
   1,622.16x = 2,067,502.69
5. Step 5: Solve for x
   x = 2,067,502.69/1,622.16
6. Step 6: Final answer
   x = 1,274.54