Finding the Fourth Proportional to 2,039.10, 2,813.85 and 1,155.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.10 : 2,813.85 = 1,155.06 : x
2. Step 2: Convert to fraction form
   2,039.10/2,813.85 = 1,155.06/x
3. Step 3: Cross multiply
   2,039.10x = 2,813.85 × 1,155.06
4. Step 4: Simplify right side
   2,039.10x = 3,250,165.58
5. Step 5: Solve for x
   x = 3,250,165.58/2,039.10
6. Step 6: Final answer
   x = 1,593.92