Finding the Fourth Proportional to 2,851.56, 3,910.02 and 2,570.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.56 : 3,910.02 = 2,570.64 : x
2. Step 2: Convert to fraction form
   2,851.56/3,910.02 = 2,570.64/x
3. Step 3: Cross multiply
   2,851.56x = 3,910.02 × 2,570.64
4. Step 4: Simplify right side
   2,851.56x = 10,051,253.81
5. Step 5: Solve for x
   x = 10,051,253.81/2,851.56
6. Step 6: Final answer
   x = 3,524.83