Finding the Fourth Proportional to 2,079.50, 3,116.63 and 1,039.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.50 : 3,116.63 = 1,039.79 : x
2. Step 2: Convert to fraction form
   2,079.50/3,116.63 = 1,039.79/x
3. Step 3: Cross multiply
   2,079.50x = 3,116.63 × 1,039.79
4. Step 4: Simplify right side
   2,079.50x = 3,240,619.93
5. Step 5: Solve for x
   x = 3,240,619.93/2,079.50
6. Step 6: Final answer
   x = 1,558.37