Finding the Fourth Proportional to 1,369.62, 2,049.83 and 992.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.62 : 2,049.83 = 992.79 : x
2. Step 2: Convert to fraction form
   1,369.62/2,049.83 = 992.79/x
3. Step 3: Cross multiply
   1,369.62x = 2,049.83 × 992.79
4. Step 4: Simplify right side
   1,369.62x = 2,035,050.73
5. Step 5: Solve for x
   x = 2,035,050.73/1,369.62
6. Step 6: Final answer
   x = 1,485.85