Finding the Fourth Proportional to 3,076.56, 4,616.82 and 1,128.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.56 : 4,616.82 = 1,128.60 : x
2. Step 2: Convert to fraction form
   3,076.56/4,616.82 = 1,128.60/x
3. Step 3: Cross multiply
   3,076.56x = 4,616.82 × 1,128.60
4. Step 4: Simplify right side
   3,076.56x = 5,210,543.05
5. Step 5: Solve for x
   x = 5,210,543.05/3,076.56
6. Step 6: Final answer
   x = 1,693.63