Finding the Fourth Proportional to 2,456.49, 3,391.12 and 1,572.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.49 : 3,391.12 = 1,572.81 : x
2. Step 2: Convert to fraction form
   2,456.49/3,391.12 = 1,572.81/x
3. Step 3: Cross multiply
   2,456.49x = 3,391.12 × 1,572.81
4. Step 4: Simplify right side
   2,456.49x = 5,333,562.63
5. Step 5: Solve for x
   x = 5,333,562.63/2,456.49
6. Step 6: Final answer
   x = 2,171.21