Finding the Fourth Proportional to 3,076.57, 4,612.02 and 1,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.57 : 4,612.02 = 1,128.52 : x
2. Step 2: Convert to fraction form
   3,076.57/4,612.02 = 1,128.52/x
3. Step 3: Cross multiply
   3,076.57x = 4,612.02 × 1,128.52
4. Step 4: Simplify right side
   3,076.57x = 5,204,756.81
5. Step 5: Solve for x
   x = 5,204,756.81/3,076.57
6. Step 6: Final answer
   x = 1,691.74