Finding the Fourth Proportional to 2,581.72, 3,877.13 and 1,923.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.72 : 3,877.13 = 1,923.78 : x
2. Step 2: Convert to fraction form
   2,581.72/3,877.13 = 1,923.78/x
3. Step 3: Cross multiply
   2,581.72x = 3,877.13 × 1,923.78
4. Step 4: Simplify right side
   2,581.72x = 7,458,745.15
5. Step 5: Solve for x
   x = 7,458,745.15/2,581.72
6. Step 6: Final answer
   x = 2,889.06