Finding the Fourth Proportional to 2,816.11, 4,223.52 and 1,061.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.11 : 4,223.52 = 1,061.29 : x
2. Step 2: Convert to fraction form
   2,816.11/4,223.52 = 1,061.29/x
3. Step 3: Cross multiply
   2,816.11x = 4,223.52 × 1,061.29
4. Step 4: Simplify right side
   2,816.11x = 4,482,379.54
5. Step 5: Solve for x
   x = 4,482,379.54/2,816.11
6. Step 6: Final answer
   x = 1,591.69