Finding the Fourth Proportional to 2,228.67, 3,076.57 and 1,433.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,228.67 : 3,076.57 = 1,433.15 : x
2. Step 2: Convert to fraction form
   2,228.67/3,076.57 = 1,433.15/x
3. Step 3: Cross multiply
   2,228.67x = 3,076.57 × 1,433.15
4. Step 4: Simplify right side
   2,228.67x = 4,409,186.30
5. Step 5: Solve for x
   x = 4,409,186.30/2,228.67
6. Step 6: Final answer
   x = 1,978.39