Finding the Fourth Proportional to 3,128.69, 4,693.69 and 1,180.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.69 : 4,693.69 = 1,180.88 : x
2. Step 2: Convert to fraction form
   3,128.69/4,693.69 = 1,180.88/x
3. Step 3: Cross multiply
   3,128.69x = 4,693.69 × 1,180.88
4. Step 4: Simplify right side
   3,128.69x = 5,542,684.65
5. Step 5: Solve for x
   x = 5,542,684.65/3,128.69
6. Step 6: Final answer
   x = 1,771.57