Finding the Fourth Proportional to 2,572.96, 3,552.52 and 1,578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.96 : 3,552.52 = 1,578.56 : x
2. Step 2: Convert to fraction form
   2,572.96/3,552.52 = 1,578.56/x
3. Step 3: Cross multiply
   2,572.96x = 3,552.52 × 1,578.56
4. Step 4: Simplify right side
   2,572.96x = 5,607,840.32
5. Step 5: Solve for x
   x = 5,607,840.32/2,572.96
6. Step 6: Final answer
   x = 2,179.53