Finding the Fourth Proportional to 2,086.30, 3,126.75 and 852.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.30 : 3,126.75 = 852.29 : x
2. Step 2: Convert to fraction form
   2,086.30/3,126.75 = 852.29/x
3. Step 3: Cross multiply
   2,086.30x = 3,126.75 × 852.29
4. Step 4: Simplify right side
   2,086.30x = 2,664,902.38
5. Step 5: Solve for x
   x = 2,664,902.38/2,086.30
6. Step 6: Final answer
   x = 1,277.34