Finding the Fourth Proportional to 2,151.42, 3,228.06 and 852.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.42 : 3,228.06 = 852.54 : x
2. Step 2: Convert to fraction form
   2,151.42/3,228.06 = 852.54/x
3. Step 3: Cross multiply
   2,151.42x = 3,228.06 × 852.54
4. Step 4: Simplify right side
   2,151.42x = 2,752,050.27
5. Step 5: Solve for x
   x = 2,752,050.27/2,151.42
6. Step 6: Final answer
   x = 1,279.18