Finding the Fourth Proportional to 3,076.47, 4,616.73 and 1,128.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.47 : 4,616.73 = 1,128.69 : x
2. Step 2: Convert to fraction form
   3,076.47/4,616.73 = 1,128.69/x
3. Step 3: Cross multiply
   3,076.47x = 4,616.73 × 1,128.69
4. Step 4: Simplify right side
   3,076.47x = 5,210,856.98
5. Step 5: Solve for x
   x = 5,210,856.98/3,076.47
6. Step 6: Final answer
   x = 1,693.78