Finding the Fourth Proportional to 2,518.24, 3,474.55 and 1,572.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.24 : 3,474.55 = 1,572.57 : x
2. Step 2: Convert to fraction form
   2,518.24/3,474.55 = 1,572.57/x
3. Step 3: Cross multiply
   2,518.24x = 3,474.55 × 1,572.57
4. Step 4: Simplify right side
   2,518.24x = 5,463,951.79
5. Step 5: Solve for x
   x = 5,463,951.79/2,518.24
6. Step 6: Final answer
   x = 2,169.75