Finding the Fourth Proportional to 2,607.52, 3,912.15 and 852.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.52 : 3,912.15 = 852.61 : x
2. Step 2: Convert to fraction form
   2,607.52/3,912.15 = 852.61/x
3. Step 3: Cross multiply
   2,607.52x = 3,912.15 × 852.61
4. Step 4: Simplify right side
   2,607.52x = 3,335,523.06
5. Step 5: Solve for x
   x = 3,335,523.06/2,607.52
6. Step 6: Final answer
   x = 1,279.19