Finding the Fourth Proportional to 2,079.91, 3,119.31 and 693.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.91 : 3,119.31 = 693.29 : x
2. Step 2: Convert to fraction form
   2,079.91/3,119.31 = 693.29/x
3. Step 3: Cross multiply
   2,079.91x = 3,119.31 × 693.29
4. Step 4: Simplify right side
   2,079.91x = 2,162,594.23
5. Step 5: Solve for x
   x = 2,162,594.23/2,079.91
6. Step 6: Final answer
   x = 1,039.75