Finding the Fourth Proportional to 2,039.55, 2,814.72 and 1,155.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.55 : 2,814.72 = 1,155.36 : x
2. Step 2: Convert to fraction form
   2,039.55/2,814.72 = 1,155.36/x
3. Step 3: Cross multiply
   2,039.55x = 2,814.72 × 1,155.36
4. Step 4: Simplify right side
   2,039.55x = 3,252,014.90
5. Step 5: Solve for x
   x = 3,252,014.90/2,039.55
6. Step 6: Final answer
   x = 1,594.48