Finding the Fourth Proportional to 1,451.80, 2,003.67 and 822.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.80 : 2,003.67 = 822.43 : x
2. Step 2: Convert to fraction form
   1,451.80/2,003.67 = 822.43/x
3. Step 3: Cross multiply
   1,451.80x = 2,003.67 × 822.43
4. Step 4: Simplify right side
   1,451.80x = 1,647,880.82
5. Step 5: Solve for x
   x = 1,647,880.82/1,451.80
6. Step 6: Final answer
   x = 1,135.06