Finding the Fourth Proportional to 1,621.92, 2,238.27 and 923.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.92 : 2,238.27 = 923.34 : x
2. Step 2: Convert to fraction form
   1,621.92/2,238.27 = 923.34/x
3. Step 3: Cross multiply
   1,621.92x = 2,238.27 × 923.34
4. Step 4: Simplify right side
   1,621.92x = 2,066,689.82
5. Step 5: Solve for x
   x = 2,066,689.82/1,621.92
6. Step 6: Final answer
   x = 1,274.22