Finding the Fourth Proportional to 2,209.47, 3,314.34 and 910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.47 : 3,314.34 = 910.50 : x
2. Step 2: Convert to fraction form
   2,209.47/3,314.34 = 910.50/x
3. Step 3: Cross multiply
   2,209.47x = 3,314.34 × 910.50
4. Step 4: Simplify right side
   2,209.47x = 3,017,706.57
5. Step 5: Solve for x
   x = 3,017,706.57/2,209.47
6. Step 6: Final answer
   x = 1,365.81