Finding the Fourth Proportional to 2,456.73, 3,390.72 and 1,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.73 : 3,390.72 = 1,572.50 : x
2. Step 2: Convert to fraction form
   2,456.73/3,390.72 = 1,572.50/x
3. Step 3: Cross multiply
   2,456.73x = 3,390.72 × 1,572.50
4. Step 4: Simplify right side
   2,456.73x = 5,331,890.25
5. Step 5: Solve for x
   x = 5,331,890.25/2,456.73
6. Step 6: Final answer
   x = 2,170.32