Finding the Fourth Proportional to 3,456.41, 5,186.45 and 2,072.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.41 : 5,186.45 = 2,072.53 : x
2. Step 2: Convert to fraction form
   3,456.41/5,186.45 = 2,072.53/x
3. Step 3: Cross multiply
   3,456.41x = 5,186.45 × 2,072.53
4. Step 4: Simplify right side
   3,456.41x = 10,749,049.89
5. Step 5: Solve for x
   x = 10,749,049.89/3,456.41
6. Step 6: Final answer
   x = 3,109.89