Finding the Fourth Proportional to 2,334.69, 3,221.91 and 1,286.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,334.69 : 3,221.91 = 1,286.69 : x
2. Step 2: Convert to fraction form
   2,334.69/3,221.91 = 1,286.69/x
3. Step 3: Cross multiply
   2,334.69x = 3,221.91 × 1,286.69
4. Step 4: Simplify right side
   2,334.69x = 4,145,583.27
5. Step 5: Solve for x
   x = 4,145,583.27/2,334.69
6. Step 6: Final answer
   x = 1,775.65