Finding the Fourth Proportional to 3,554.79, 5,327.54 and 1,909.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,554.79 : 5,327.54 = 1,909.41 : x
2. Step 2: Convert to fraction form
   3,554.79/5,327.54 = 1,909.41/x
3. Step 3: Cross multiply
   3,554.79x = 5,327.54 × 1,909.41
4. Step 4: Simplify right side
   3,554.79x = 10,172,458.15
5. Step 5: Solve for x
   x = 10,172,458.15/3,554.79
6. Step 6: Final answer
   x = 2,861.62