Finding the Fourth Proportional to 2,071.28, 3,103.32 and 1,096.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.28 : 3,103.32 = 1,096.40 : x
2. Step 2: Convert to fraction form
   2,071.28/3,103.32 = 1,096.40/x
3. Step 3: Cross multiply
   2,071.28x = 3,103.32 × 1,096.40
4. Step 4: Simplify right side
   2,071.28x = 3,402,480.05
5. Step 5: Solve for x
   x = 3,402,480.05/2,071.28
6. Step 6: Final answer
   x = 1,642.69