Finding the Fourth Proportional to 2,747.50, 3,788.70 and 1,909.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,747.50 : 3,788.70 = 1,909.15 : x
2. Step 2: Convert to fraction form
   2,747.50/3,788.70 = 1,909.15/x
3. Step 3: Cross multiply
   2,747.50x = 3,788.70 × 1,909.15
4. Step 4: Simplify right side
   2,747.50x = 7,233,196.61
5. Step 5: Solve for x
   x = 7,233,196.61/2,747.50
6. Step 6: Final answer
   x = 2,632.65