Finding the Fourth Proportional to 2,327.20, 3,487.83 and 1,091.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,327.20 : 3,487.83 = 1,091.88 : x
2. Step 2: Convert to fraction form
   2,327.20/3,487.83 = 1,091.88/x
3. Step 3: Cross multiply
   2,327.20x = 3,487.83 × 1,091.88
4. Step 4: Simplify right side
   2,327.20x = 3,808,300.54
5. Step 5: Solve for x
   x = 3,808,300.54/2,327.20
6. Step 6: Final answer
   x = 1,636.43