Finding the Fourth Proportional to 2,281.23, 3,148.29 and 1,286.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.23 : 3,148.29 = 1,286.55 : x
2. Step 2: Convert to fraction form
   2,281.23/3,148.29 = 1,286.55/x
3. Step 3: Cross multiply
   2,281.23x = 3,148.29 × 1,286.55
4. Step 4: Simplify right side
   2,281.23x = 4,050,432.50
5. Step 5: Solve for x
   x = 4,050,432.50/2,281.23
6. Step 6: Final answer
   x = 1,775.55