Finding the Fourth Proportional to 3,387.98, 5,081.37 and 922.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,387.98 : 5,081.37 = 922.47 : x
2. Step 2: Convert to fraction form
   3,387.98/5,081.37 = 922.47/x
3. Step 3: Cross multiply
   3,387.98x = 5,081.37 × 922.47
4. Step 4: Simplify right side
   3,387.98x = 4,687,411.38
5. Step 5: Solve for x
   x = 4,687,411.38/3,387.98
6. Step 6: Final answer
   x = 1,383.54