Finding the Fourth Proportional to 2,209.52, 3,314.56 and 910.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.52 : 3,314.56 = 910.88 : x
2. Step 2: Convert to fraction form
   2,209.52/3,314.56 = 910.88/x
3. Step 3: Cross multiply
   2,209.52x = 3,314.56 × 910.88
4. Step 4: Simplify right side
   2,209.52x = 3,019,166.41
5. Step 5: Solve for x
   x = 3,019,166.41/2,209.52
6. Step 6: Final answer
   x = 1,366.44