Finding the Fourth Proportional to 2,079.56, 3,117.71 and 1,039.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.56 : 3,117.71 = 1,039.05 : x
2. Step 2: Convert to fraction form
   2,079.56/3,117.71 = 1,039.05/x
3. Step 3: Cross multiply
   2,079.56x = 3,117.71 × 1,039.05
4. Step 4: Simplify right side
   2,079.56x = 3,239,459.17
5. Step 5: Solve for x
   x = 3,239,459.17/2,079.56
6. Step 6: Final answer
   x = 1,557.76