Finding the Fourth Proportional to 3,076.67, 4,612.25 and 1,128.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.67 : 4,612.25 = 1,128.42 : x
2. Step 2: Convert to fraction form
   3,076.67/4,612.25 = 1,128.42/x
3. Step 3: Cross multiply
   3,076.67x = 4,612.25 × 1,128.42
4. Step 4: Simplify right side
   3,076.67x = 5,204,534.90
5. Step 5: Solve for x
   x = 5,204,534.90/3,076.67
6. Step 6: Final answer
   x = 1,691.62