Finding the Fourth Proportional to 3,786.05, 5,680.49 and 1,705.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.05 : 5,680.49 = 1,705.43 : x
2. Step 2: Convert to fraction form
   3,786.05/5,680.49 = 1,705.43/x
3. Step 3: Cross multiply
   3,786.05x = 5,680.49 × 1,705.43
4. Step 4: Simplify right side
   3,786.05x = 9,687,641.13
5. Step 5: Solve for x
   x = 9,687,641.13/3,786.05
6. Step 6: Final answer
   x = 2,558.78