Finding the Fourth Proportional to 2,542.47, 3,815.31 and 1,081.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.47 : 3,815.31 = 1,081.62 : x
2. Step 2: Convert to fraction form
   2,542.47/3,815.31 = 1,081.62/x
3. Step 3: Cross multiply
   2,542.47x = 3,815.31 × 1,081.62
4. Step 4: Simplify right side
   2,542.47x = 4,126,715.60
5. Step 5: Solve for x
   x = 4,126,715.60/2,542.47
6. Step 6: Final answer
   x = 1,623.11