Finding the Fourth Proportional to 3,111.81, 4,668.17 and 1,137.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.81 : 4,668.17 = 1,137.54 : x
2. Step 2: Convert to fraction form
   3,111.81/4,668.17 = 1,137.54/x
3. Step 3: Cross multiply
   3,111.81x = 4,668.17 × 1,137.54
4. Step 4: Simplify right side
   3,111.81x = 5,310,206.76
5. Step 5: Solve for x
   x = 5,310,206.76/3,111.81
6. Step 6: Final answer
   x = 1,706.47