Finding the Fourth Proportional to 1,721.56, 2,582.28 and 844.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.56 : 2,582.28 = 844.72 : x
2. Step 2: Convert to fraction form
   1,721.56/2,582.28 = 844.72/x
3. Step 3: Cross multiply
   1,721.56x = 2,582.28 × 844.72
4. Step 4: Simplify right side
   1,721.56x = 2,181,303.56
5. Step 5: Solve for x
   x = 2,181,303.56/1,721.56
6. Step 6: Final answer
   x = 1,267.05