Finding the Fourth Proportional to 2,152.22, 3,227.78 and 852.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.22 : 3,227.78 = 852.98 : x
2. Step 2: Convert to fraction form
   2,152.22/3,227.78 = 852.98/x
3. Step 3: Cross multiply
   2,152.22x = 3,227.78 × 852.98
4. Step 4: Simplify right side
   2,152.22x = 2,753,231.78
5. Step 5: Solve for x
   x = 2,753,231.78/2,152.22
6. Step 6: Final answer
   x = 1,279.25