Finding the Fourth Proportional to 2,054.44, 3,079.90 and 822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.44 : 3,079.90 = 822.72 : x
2. Step 2: Convert to fraction form
   2,054.44/3,079.90 = 822.72/x
3. Step 3: Cross multiply
   2,054.44x = 3,079.90 × 822.72
4. Step 4: Simplify right side
   2,054.44x = 2,533,895.33
5. Step 5: Solve for x
   x = 2,533,895.33/2,054.44
6. Step 6: Final answer
   x = 1,233.38