Finding the Fourth Proportional to 2,563.82, 3,848.11 and 1,315.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563.82 : 3,848.11 = 1,315.31 : x
2. Step 2: Convert to fraction form
   2,563.82/3,848.11 = 1,315.31/x
3. Step 3: Cross multiply
   2,563.82x = 3,848.11 × 1,315.31
4. Step 4: Simplify right side
   2,563.82x = 5,061,440.58
5. Step 5: Solve for x
   x = 5,061,440.58/2,563.82
6. Step 6: Final answer
   x = 1,974.18