Finding the Fourth Proportional to 2,086.66, 3,123.60 and 1,791.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.66 : 3,123.60 = 1,791.41 : x
2. Step 2: Convert to fraction form
   2,086.66/3,123.60 = 1,791.41/x
3. Step 3: Cross multiply
   2,086.66x = 3,123.60 × 1,791.41
4. Step 4: Simplify right side
   2,086.66x = 5,595,648.28
5. Step 5: Solve for x
   x = 5,595,648.28/2,086.66
6. Step 6: Final answer
   x = 2,681.64