Finding the Fourth Proportional to 2,086.74, 3,127.40 and 852.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.74 : 3,127.40 = 852.73 : x
2. Step 2: Convert to fraction form
   2,086.74/3,127.40 = 852.73/x
3. Step 3: Cross multiply
   2,086.74x = 3,127.40 × 852.73
4. Step 4: Simplify right side
   2,086.74x = 2,666,827.80
5. Step 5: Solve for x
   x = 2,666,827.80/2,086.74
6. Step 6: Final answer
   x = 1,277.99