Finding the Fourth Proportional to 3,111.85, 4,668.61 and 1,264.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.85 : 4,668.61 = 1,264.25 : x
2. Step 2: Convert to fraction form
   3,111.85/4,668.61 = 1,264.25/x
3. Step 3: Cross multiply
   3,111.85x = 4,668.61 × 1,264.25
4. Step 4: Simplify right side
   3,111.85x = 5,902,260.53
5. Step 5: Solve for x
   x = 5,902,260.53/3,111.85
6. Step 6: Final answer
   x = 1,896.71