Finding the Fourth Proportional to 2,553.81, 3,828.92 and 992.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.81 : 3,828.92 = 992.52 : x
2. Step 2: Convert to fraction form
   2,553.81/3,828.92 = 992.52/x
3. Step 3: Cross multiply
   2,553.81x = 3,828.92 × 992.52
4. Step 4: Simplify right side
   2,553.81x = 3,800,274.72
5. Step 5: Solve for x
   x = 3,800,274.72/2,553.81
6. Step 6: Final answer
   x = 1,488.08