Finding the Fourth Proportional to 3,128.94, 4,693.55 and 1,181.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.94 : 4,693.55 = 1,181.30 : x
2. Step 2: Convert to fraction form
   3,128.94/4,693.55 = 1,181.30/x
3. Step 3: Cross multiply
   3,128.94x = 4,693.55 × 1,181.30
4. Step 4: Simplify right side
   3,128.94x = 5,544,461.24
5. Step 5: Solve for x
   x = 5,544,461.24/3,128.94
6. Step 6: Final answer
   x = 1,771.99