Finding the Fourth Proportional to 2,818.30, 4,227.73 and 969.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.30 : 4,227.73 = 969.17 : x
2. Step 2: Convert to fraction form
   2,818.30/4,227.73 = 969.17/x
3. Step 3: Cross multiply
   2,818.30x = 4,227.73 × 969.17
4. Step 4: Simplify right side
   2,818.30x = 4,097,365.52
5. Step 5: Solve for x
   x = 4,097,365.52/2,818.30
6. Step 6: Final answer
   x = 1,453.84