Finding the Fourth Proportional to 2,079.46, 3,119.73 and 1,039.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.46 : 3,119.73 = 1,039.42 : x
2. Step 2: Convert to fraction form
   2,079.46/3,119.73 = 1,039.42/x
3. Step 3: Cross multiply
   2,079.46x = 3,119.73 × 1,039.42
4. Step 4: Simplify right side
   2,079.46x = 3,242,709.76
5. Step 5: Solve for x
   x = 3,242,709.76/2,079.46
6. Step 6: Final answer
   x = 1,559.40