Finding the Fourth Proportional to 2,607.15, 3,910.96 and 852.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.15 : 3,910.96 = 852.08 : x
2. Step 2: Convert to fraction form
   2,607.15/3,910.96 = 852.08/x
3. Step 3: Cross multiply
   2,607.15x = 3,910.96 × 852.08
4. Step 4: Simplify right side
   2,607.15x = 3,332,443.78
5. Step 5: Solve for x
   x = 3,332,443.78/2,607.15
6. Step 6: Final answer
   x = 1,278.20