Finding the Fourth Proportional to 2,469.84, 3,706.38 and 909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,469.84 : 3,706.38 = 909.86 : x
2. Step 2: Convert to fraction form
   2,469.84/3,706.38 = 909.86/x
3. Step 3: Cross multiply
   2,469.84x = 3,706.38 × 909.86
4. Step 4: Simplify right side
   2,469.84x = 3,372,292.76
5. Step 5: Solve for x
   x = 3,372,292.76/2,469.84
6. Step 6: Final answer
   x = 1,365.39