Finding the Fourth Proportional to 2,150.79, 3,227.76 and 852.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.79 : 3,227.76 = 852.63 : x
2. Step 2: Convert to fraction form
   2,150.79/3,227.76 = 852.63/x
3. Step 3: Cross multiply
   2,150.79x = 3,227.76 × 852.63
4. Step 4: Simplify right side
   2,150.79x = 2,752,085.01
5. Step 5: Solve for x
   x = 2,752,085.01/2,150.79
6. Step 6: Final answer
   x = 1,279.57