Finding the Fourth Proportional to 2,079.83, 3,119.54 and 540.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.83 : 3,119.54 = 540.83 : x
2. Step 2: Convert to fraction form
   2,079.83/3,119.54 = 540.83/x
3. Step 3: Cross multiply
   2,079.83x = 3,119.54 × 540.83
4. Step 4: Simplify right side
   2,079.83x = 1,687,122.52
5. Step 5: Solve for x
   x = 1,687,122.52/2,079.83
6. Step 6: Final answer
   x = 811.18