Finding the Fourth Proportional to 2,079.29, 3,120.41 and 1,155.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.29 : 3,120.41 = 1,155.58 : x
2. Step 2: Convert to fraction form
   2,079.29/3,120.41 = 1,155.58/x
3. Step 3: Cross multiply
   2,079.29x = 3,120.41 × 1,155.58
4. Step 4: Simplify right side
   2,079.29x = 3,605,878.48
5. Step 5: Solve for x
   x = 3,605,878.48/2,079.29
6. Step 6: Final answer
   x = 1,734.19