Finding the Fourth Proportional to 1,614.98, 2,228.72 and 1,143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,614.98 : 2,228.72 = 1,143.72 : x
2. Step 2: Convert to fraction form
   1,614.98/2,228.72 = 1,143.72/x
3. Step 3: Cross multiply
   1,614.98x = 2,228.72 × 1,143.72
4. Step 4: Simplify right side
   1,614.98x = 2,549,025.92
5. Step 5: Solve for x
   x = 2,549,025.92/1,614.98
6. Step 6: Final answer
   x = 1,578.37