Finding the Fourth Proportional to 3,128.40, 4,693.29 and 1,180.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.40 : 4,693.29 = 1,180.62 : x
2. Step 2: Convert to fraction form
   3,128.40/4,693.29 = 1,180.62/x
3. Step 3: Cross multiply
   3,128.40x = 4,693.29 × 1,180.62
4. Step 4: Simplify right side
   3,128.40x = 5,540,992.04
5. Step 5: Solve for x
   x = 5,540,992.04/3,128.40
6. Step 6: Final answer
   x = 1,771.19