Finding the Fourth Proportional to 2,118.10, 3,176.52 and 731.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.10 : 3,176.52 = 731.20 : x
2. Step 2: Convert to fraction form
   2,118.10/3,176.52 = 731.20/x
3. Step 3: Cross multiply
   2,118.10x = 3,176.52 × 731.20
4. Step 4: Simplify right side
   2,118.10x = 2,322,671.42
5. Step 5: Solve for x
   x = 2,322,671.42/2,118.10
6. Step 6: Final answer
   x = 1,096.58