Finding the Fourth Proportional to 2,039.58, 2,814.60 and 1,155.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.58 : 2,814.60 = 1,155.18 : x
2. Step 2: Convert to fraction form
   2,039.58/2,814.60 = 1,155.18/x
3. Step 3: Cross multiply
   2,039.58x = 2,814.60 × 1,155.18
4. Step 4: Simplify right side
   2,039.58x = 3,251,369.63
5. Step 5: Solve for x
   x = 3,251,369.63/2,039.58
6. Step 6: Final answer
   x = 1,594.14