Finding the Fourth Proportional to 3,287.21, 4,931.60 and 1,095.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,287.21 : 4,931.60 = 1,095.96 : x
2. Step 2: Convert to fraction form
   3,287.21/4,931.60 = 1,095.96/x
3. Step 3: Cross multiply
   3,287.21x = 4,931.60 × 1,095.96
4. Step 4: Simplify right side
   3,287.21x = 5,404,836.34
5. Step 5: Solve for x
   x = 5,404,836.34/3,287.21
6. Step 6: Final answer
   x = 1,644.20