Finding the Fourth Proportional to 2,281.01, 3,147.77 and 1,286.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.01 : 3,147.77 = 1,286.60 : x
2. Step 2: Convert to fraction form
   2,281.01/3,147.77 = 1,286.60/x
3. Step 3: Cross multiply
   2,281.01x = 3,147.77 × 1,286.60
4. Step 4: Simplify right side
   2,281.01x = 4,049,922.32
5. Step 5: Solve for x
   x = 4,049,922.32/2,281.01
6. Step 6: Final answer
   x = 1,775.50