Finding the Fourth Proportional to 2,811.98, 4,218.15 and 963.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.98 : 4,218.15 = 963.29 : x
2. Step 2: Convert to fraction form
   2,811.98/4,218.15 = 963.29/x
3. Step 3: Cross multiply
   2,811.98x = 4,218.15 × 963.29
4. Step 4: Simplify right side
   2,811.98x = 4,063,301.71
5. Step 5: Solve for x
   x = 4,063,301.71/2,811.98
6. Step 6: Final answer
   x = 1,445.00