Finding the Fourth Proportional to 2,281.32, 3,148.38 and 1,286.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.32 : 3,148.38 = 1,286.69 : x
2. Step 2: Convert to fraction form
   2,281.32/3,148.38 = 1,286.69/x
3. Step 3: Cross multiply
   2,281.32x = 3,148.38 × 1,286.69
4. Step 4: Simplify right side
   2,281.32x = 4,050,989.06
5. Step 5: Solve for x
   x = 4,050,989.06/2,281.32
6. Step 6: Final answer
   x = 1,775.72