Finding the Fourth Proportional to 2,281.92, 3,128.50 and 2,240.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.92 : 3,128.50 = 2,240.40 : x
2. Step 2: Convert to fraction form
   2,281.92/3,128.50 = 2,240.40/x
3. Step 3: Cross multiply
   2,281.92x = 3,128.50 × 2,240.40
4. Step 4: Simplify right side
   2,281.92x = 7,009,091.40
5. Step 5: Solve for x
   x = 7,009,091.40/2,281.92
6. Step 6: Final answer
   x = 3,071.58