Finding the Fourth Proportional to 2,086.56, 3,126.60 and 852.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.56 : 3,126.60 = 852.93 : x
2. Step 2: Convert to fraction form
   2,086.56/3,126.60 = 852.93/x
3. Step 3: Cross multiply
   2,086.56x = 3,126.60 × 852.93
4. Step 4: Simplify right side
   2,086.56x = 2,666,770.94
5. Step 5: Solve for x
   x = 2,666,770.94/2,086.56
6. Step 6: Final answer
   x = 1,278.07