Finding the Fourth Proportional to 2,057.39, 3,086.81 and 1,366.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.39 : 3,086.81 = 1,366.80 : x
2. Step 2: Convert to fraction form
   2,057.39/3,086.81 = 1,366.80/x
3. Step 3: Cross multiply
   2,057.39x = 3,086.81 × 1,366.80
4. Step 4: Simplify right side
   2,057.39x = 4,219,038.62
5. Step 5: Solve for x
   x = 4,219,038.62/2,057.39
6. Step 6: Final answer
   x = 2,050.68