Finding the Fourth Proportional to 2,039.68, 2,814.61 and 1,143.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.68 : 2,814.61 = 1,143.52 : x
2. Step 2: Convert to fraction form
   2,039.68/2,814.61 = 1,143.52/x
3. Step 3: Cross multiply
   2,039.68x = 2,814.61 × 1,143.52
4. Step 4: Simplify right side
   2,039.68x = 3,218,543.04
5. Step 5: Solve for x
   x = 3,218,543.04/2,039.68
6. Step 6: Final answer
   x = 1,577.96