Finding the Fourth Proportional to 2,086.55, 3,127.43 and 699.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.55 : 3,127.43 = 699.56 : x
2. Step 2: Convert to fraction form
   2,086.55/3,127.43 = 699.56/x
3. Step 3: Cross multiply
   2,086.55x = 3,127.43 × 699.56
4. Step 4: Simplify right side
   2,086.55x = 2,187,805.80
5. Step 5: Solve for x
   x = 2,187,805.80/2,086.55
6. Step 6: Final answer
   x = 1,048.53