Finding the Fourth Proportional to 1,662.27, 2,293.81 and 999.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.27 : 2,293.81 = 999.49 : x
2. Step 2: Convert to fraction form
   1,662.27/2,293.81 = 999.49/x
3. Step 3: Cross multiply
   1,662.27x = 2,293.81 × 999.49
4. Step 4: Simplify right side
   1,662.27x = 2,292,623.69
5. Step 5: Solve for x
   x = 2,292,623.69/1,662.27
6. Step 6: Final answer
   x = 1,379.22