Finding the Fourth Proportional to 2,280.73, 3,147.29 and 1,286.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.73 : 3,147.29 = 1,286.01 : x
2. Step 2: Convert to fraction form
   2,280.73/3,147.29 = 1,286.01/x
3. Step 3: Cross multiply
   2,280.73x = 3,147.29 × 1,286.01
4. Step 4: Simplify right side
   2,280.73x = 4,047,430.68
5. Step 5: Solve for x
   x = 4,047,430.68/2,280.73
6. Step 6: Final answer
   x = 1,774.62