Finding the Fourth Proportional to 2,542.32, 3,813.89 and 1,243.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.32 : 3,813.89 = 1,243.89 : x
2. Step 2: Convert to fraction form
   2,542.32/3,813.89 = 1,243.89/x
3. Step 3: Cross multiply
   2,542.32x = 3,813.89 × 1,243.89
4. Step 4: Simplify right side
   2,542.32x = 4,744,053.41
5. Step 5: Solve for x
   x = 4,744,053.41/2,542.32
6. Step 6: Final answer
   x = 1,866.03