Finding the Fourth Proportional to 1,485.98, 2,050.56 and 822.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.98 : 2,050.56 = 822.71 : x
2. Step 2: Convert to fraction form
   1,485.98/2,050.56 = 822.71/x
3. Step 3: Cross multiply
   1,485.98x = 2,050.56 × 822.71
4. Step 4: Simplify right side
   1,485.98x = 1,687,016.22
5. Step 5: Solve for x
   x = 1,687,016.22/1,485.98
6. Step 6: Final answer
   x = 1,135.29