Finding the Fourth Proportional to 3,076.32, 4,614.72 and 1,128.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.32 : 4,614.72 = 1,128.48 : x
2. Step 2: Convert to fraction form
   3,076.32/4,614.72 = 1,128.48/x
3. Step 3: Cross multiply
   3,076.32x = 4,614.72 × 1,128.48
4. Step 4: Simplify right side
   3,076.32x = 5,207,619.23
5. Step 5: Solve for x
   x = 5,207,619.23/3,076.32
6. Step 6: Final answer
   x = 1,692.81