Finding the Fourth Proportional to 1,662.88, 2,294.24 and 999.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.88 : 2,294.24 = 999.48 : x
2. Step 2: Convert to fraction form
   1,662.88/2,294.24 = 999.48/x
3. Step 3: Cross multiply
   1,662.88x = 2,294.24 × 999.48
4. Step 4: Simplify right side
   1,662.88x = 2,293,047.00
5. Step 5: Solve for x
   x = 2,293,047.00/1,662.88
6. Step 6: Final answer
   x = 1,378.96