Finding the Fourth Proportional to 2,281.71, 3,148.83 and 1,287.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.71 : 3,148.83 = 1,287.03 : x
2. Step 2: Convert to fraction form
   2,281.71/3,148.83 = 1,287.03/x
3. Step 3: Cross multiply
   2,281.71x = 3,148.83 × 1,287.03
4. Step 4: Simplify right side
   2,281.71x = 4,052,638.67
5. Step 5: Solve for x
   x = 4,052,638.67/2,281.71
6. Step 6: Final answer
   x = 1,776.14