Finding the Fourth Proportional to 1,447.29, 1,998.81 and 923.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.29 : 1,998.81 = 923.63 : x
2. Step 2: Convert to fraction form
   1,447.29/1,998.81 = 923.63/x
3. Step 3: Cross multiply
   1,447.29x = 1,998.81 × 923.63
4. Step 4: Simplify right side
   1,447.29x = 1,846,150.89
5. Step 5: Solve for x
   x = 1,846,150.89/1,447.29
6. Step 6: Final answer
   x = 1,275.59