Finding the Fourth Proportional to 1,485.91, 2,050.59 and 822.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.91 : 2,050.59 = 822.79 : x
2. Step 2: Convert to fraction form
   1,485.91/2,050.59 = 822.79/x
3. Step 3: Cross multiply
   1,485.91x = 2,050.59 × 822.79
4. Step 4: Simplify right side
   1,485.91x = 1,687,204.95
5. Step 5: Solve for x
   x = 1,687,204.95/1,485.91
6. Step 6: Final answer
   x = 1,135.47