Finding the Fourth Proportional to 1,323.38, 1,981.42 and 997.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.38 : 1,981.42 = 997.76 : x
2. Step 2: Convert to fraction form
   1,323.38/1,981.42 = 997.76/x
3. Step 3: Cross multiply
   1,323.38x = 1,981.42 × 997.76
4. Step 4: Simplify right side
   1,323.38x = 1,976,981.62
5. Step 5: Solve for x
   x = 1,976,981.62/1,323.38
6. Step 6: Final answer
   x = 1,493.89