Finding the Fourth Proportional to 2,728.18, 3,766.23 and 1,889.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,728.18 : 3,766.23 = 1,889.52 : x
2. Step 2: Convert to fraction form
   2,728.18/3,766.23 = 1,889.52/x
3. Step 3: Cross multiply
   2,728.18x = 3,766.23 × 1,889.52
4. Step 4: Simplify right side
   2,728.18x = 7,116,366.91
5. Step 5: Solve for x
   x = 7,116,366.91/2,728.18
6. Step 6: Final answer
   x = 2,608.47