Finding the Fourth Proportional to 2,039.25, 2,813.50 and 1,142.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.25 : 2,813.50 = 1,142.86 : x
2. Step 2: Convert to fraction form
   2,039.25/2,813.50 = 1,142.86/x
3. Step 3: Cross multiply
   2,039.25x = 2,813.50 × 1,142.86
4. Step 4: Simplify right side
   2,039.25x = 3,215,431.46
5. Step 5: Solve for x
   x = 3,215,431.46/2,039.25
6. Step 6: Final answer
   x = 1,576.77