Finding the Fourth Proportional to 1,662.40, 2,490.38 and 932.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.40 : 2,490.38 = 932.48 : x
2. Step 2: Convert to fraction form
   1,662.40/2,490.38 = 932.48/x
3. Step 3: Cross multiply
   1,662.40x = 2,490.38 × 932.48
4. Step 4: Simplify right side
   1,662.40x = 2,322,229.54
5. Step 5: Solve for x
   x = 2,322,229.54/1,662.40
6. Step 6: Final answer
   x = 1,396.91