Finding the Fourth Proportional to 3,668.78, 5,504.43 and 1,072.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668.78 : 5,504.43 = 1,072.10 : x
2. Step 2: Convert to fraction form
   3,668.78/5,504.43 = 1,072.10/x
3. Step 3: Cross multiply
   3,668.78x = 5,504.43 × 1,072.10
4. Step 4: Simplify right side
   3,668.78x = 5,901,299.40
5. Step 5: Solve for x
   x = 5,901,299.40/3,668.78
6. Step 6: Final answer
   x = 1,608.52