Finding the Fourth Proportional to 1,443.62, 2,169.05 and 923.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.62 : 2,169.05 = 923.87 : x
2. Step 2: Convert to fraction form
   1,443.62/2,169.05 = 923.87/x
3. Step 3: Cross multiply
   1,443.62x = 2,169.05 × 923.87
4. Step 4: Simplify right side
   1,443.62x = 2,003,921.03
5. Step 5: Solve for x
   x = 2,003,921.03/1,443.62
6. Step 6: Final answer
   x = 1,388.12