Finding the Fourth Proportional to 1,662.28, 2,294.12 and 999.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.28 : 2,294.12 = 999.52 : x
2. Step 2: Convert to fraction form
   1,662.28/2,294.12 = 999.52/x
3. Step 3: Cross multiply
   1,662.28x = 2,294.12 × 999.52
4. Step 4: Simplify right side
   1,662.28x = 2,293,018.82
5. Step 5: Solve for x
   x = 2,293,018.82/1,662.28
6. Step 6: Final answer
   x = 1,379.44