Finding the Fourth Proportional to 2,816.52, 4,223.82 and 1,172.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.52 : 4,223.82 = 1,172.16 : x
2. Step 2: Convert to fraction form
   2,816.52/4,223.82 = 1,172.16/x
3. Step 3: Cross multiply
   2,816.52x = 4,223.82 × 1,172.16
4. Step 4: Simplify right side
   2,816.52x = 4,950,992.85
5. Step 5: Solve for x
   x = 4,950,992.85/2,816.52
6. Step 6: Final answer
   x = 1,757.84