Finding the Fourth Proportional to 1,896.72, 2,844.75 and 726.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.72 : 2,844.75 = 726.42 : x
2. Step 2: Convert to fraction form
   1,896.72/2,844.75 = 726.42/x
3. Step 3: Cross multiply
   1,896.72x = 2,844.75 × 726.42
4. Step 4: Simplify right side
   1,896.72x = 2,066,483.30
5. Step 5: Solve for x
   x = 2,066,483.30/1,896.72
6. Step 6: Final answer
   x = 1,089.50