Finding the Fourth Proportional to 2,150.31, 3,226.56 and 852.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.31 : 3,226.56 = 852.69 : x
2. Step 2: Convert to fraction form
   2,150.31/3,226.56 = 852.69/x
3. Step 3: Cross multiply
   2,150.31x = 3,226.56 × 852.69
4. Step 4: Simplify right side
   2,150.31x = 2,751,255.45
5. Step 5: Solve for x
   x = 2,751,255.45/2,150.31
6. Step 6: Final answer
   x = 1,279.47