Finding the Fourth Proportional to 2,456.99, 3,391.81 and 1,573.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.99 : 3,391.81 = 1,573.31 : x
2. Step 2: Convert to fraction form
   2,456.99/3,391.81 = 1,573.31/x
3. Step 3: Cross multiply
   2,456.99x = 3,391.81 × 1,573.31
4. Step 4: Simplify right side
   2,456.99x = 5,336,343.77
5. Step 5: Solve for x
   x = 5,336,343.77/2,456.99
6. Step 6: Final answer
   x = 2,171.90