Finding the Fourth Proportional to 2,280.87, 3,147.59 and 1,286.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.87 : 3,147.59 = 1,286.16 : x
2. Step 2: Convert to fraction form
   2,280.87/3,147.59 = 1,286.16/x
3. Step 3: Cross multiply
   2,280.87x = 3,147.59 × 1,286.16
4. Step 4: Simplify right side
   2,280.87x = 4,048,307.57
5. Step 5: Solve for x
   x = 4,048,307.57/2,280.87
6. Step 6: Final answer
   x = 1,774.89