Finding the Fourth Proportional to 2,571.96, 3,855.76 and 1,091.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.96 : 3,855.76 = 1,091.12 : x
2. Step 2: Convert to fraction form
   2,571.96/3,855.76 = 1,091.12/x
3. Step 3: Cross multiply
   2,571.96x = 3,855.76 × 1,091.12
4. Step 4: Simplify right side
   2,571.96x = 4,207,096.85
5. Step 5: Solve for x
   x = 4,207,096.85/2,571.96
6. Step 6: Final answer
   x = 1,635.76