Finding the Fourth Proportional to 2,067.79, 3,098.38 and 1,857.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.79 : 3,098.38 = 1,857.98 : x
2. Step 2: Convert to fraction form
   2,067.79/3,098.38 = 1,857.98/x
3. Step 3: Cross multiply
   2,067.79x = 3,098.38 × 1,857.98
4. Step 4: Simplify right side
   2,067.79x = 5,756,711.42
5. Step 5: Solve for x
   x = 5,756,711.42/2,067.79
6. Step 6: Final answer
   x = 2,783.99