Finding the Fourth Proportional to 2,724.30, 4,086.72 and 992.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.30 : 4,086.72 = 992.52 : x
2. Step 2: Convert to fraction form
   2,724.30/4,086.72 = 992.52/x
3. Step 3: Cross multiply
   2,724.30x = 4,086.72 × 992.52
4. Step 4: Simplify right side
   2,724.30x = 4,056,151.33
5. Step 5: Solve for x
   x = 4,056,151.33/2,724.30
6. Step 6: Final answer
   x = 1,488.88