Finding the Fourth Proportional to 2,011.76, 3,018.79 and 1,571.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.76 : 3,018.79 = 1,571.78 : x
2. Step 2: Convert to fraction form
   2,011.76/3,018.79 = 1,571.78/x
3. Step 3: Cross multiply
   2,011.76x = 3,018.79 × 1,571.78
4. Step 4: Simplify right side
   2,011.76x = 4,744,850.79
5. Step 5: Solve for x
   x = 4,744,850.79/2,011.76
6. Step 6: Final answer
   x = 2,358.56