Finding the Fourth Proportional to 2,057.81, 3,086.10 and 1,133.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.81 : 3,086.10 = 1,133.80 : x
2. Step 2: Convert to fraction form
   2,057.81/3,086.10 = 1,133.80/x
3. Step 3: Cross multiply
   2,057.81x = 3,086.10 × 1,133.80
4. Step 4: Simplify right side
   2,057.81x = 3,499,012.46
5. Step 5: Solve for x
   x = 3,499,012.46/2,057.81
6. Step 6: Final answer
   x = 1,700.36