Finding the Fourth Proportional to 1,452.17, 2,003.79 and 822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.17 : 2,003.79 = 822.72 : x
2. Step 2: Convert to fraction form
   1,452.17/2,003.79 = 822.72/x
3. Step 3: Cross multiply
   1,452.17x = 2,003.79 × 822.72
4. Step 4: Simplify right side
   1,452.17x = 1,648,558.11
5. Step 5: Solve for x
   x = 1,648,558.11/1,452.17
6. Step 6: Final answer
   x = 1,135.24