Finding the Fourth Proportional to 2,098.72, 3,148.38 and 711.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.72 : 3,148.38 = 711.79 : x
2. Step 2: Convert to fraction form
   2,098.72/3,148.38 = 711.79/x
3. Step 3: Cross multiply
   2,098.72x = 3,148.38 × 711.79
4. Step 4: Simplify right side
   2,098.72x = 2,240,985.40
5. Step 5: Solve for x
   x = 2,240,985.40/2,098.72
6. Step 6: Final answer
   x = 1,067.79