Finding the Fourth Proportional to 2,039.97, 2,814.91 and 1,155.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.97 : 2,814.91 = 1,155.55 : x
2. Step 2: Convert to fraction form
   2,039.97/2,814.91 = 1,155.55/x
3. Step 3: Cross multiply
   2,039.97x = 2,814.91 × 1,155.55
4. Step 4: Simplify right side
   2,039.97x = 3,252,769.25
5. Step 5: Solve for x
   x = 3,252,769.25/2,039.97
6. Step 6: Final answer
   x = 1,594.52