Finding the Fourth Proportional to 2,128.28, 3,191.05 and 895.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.28 : 3,191.05 = 895.05 : x
2. Step 2: Convert to fraction form
   2,128.28/3,191.05 = 895.05/x
3. Step 3: Cross multiply
   2,128.28x = 3,191.05 × 895.05
4. Step 4: Simplify right side
   2,128.28x = 2,856,145.39
5. Step 5: Solve for x
   x = 2,856,145.39/2,128.28
6. Step 6: Final answer
   x = 1,342.00