Finding the Fourth Proportional to 2,327.18, 3,487.78 and 1,091.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,327.18 : 3,487.78 = 1,091.86 : x
2. Step 2: Convert to fraction form
   2,327.18/3,487.78 = 1,091.86/x
3. Step 3: Cross multiply
   2,327.18x = 3,487.78 × 1,091.86
4. Step 4: Simplify right side
   2,327.18x = 3,808,167.47
5. Step 5: Solve for x
   x = 3,808,167.47/2,327.18
6. Step 6: Final answer
   x = 1,636.39