Finding the Fourth Proportional to 2,620.72, 3,925.02 and 1,578.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.72 : 3,925.02 = 1,578.42 : x
2. Step 2: Convert to fraction form
   2,620.72/3,925.02 = 1,578.42/x
3. Step 3: Cross multiply
   2,620.72x = 3,925.02 × 1,578.42
4. Step 4: Simplify right side
   2,620.72x = 6,195,330.07
5. Step 5: Solve for x
   x = 6,195,330.07/2,620.72
6. Step 6: Final answer
   x = 2,363.98