Finding the Fourth Proportional to 2,140.14, 3,208.34 and 841.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.14 : 3,208.34 = 841.34 : x
2. Step 2: Convert to fraction form
   2,140.14/3,208.34 = 841.34/x
3. Step 3: Cross multiply
   2,140.14x = 3,208.34 × 841.34
4. Step 4: Simplify right side
   2,140.14x = 2,699,304.78
5. Step 5: Solve for x
   x = 2,699,304.78/2,140.14
6. Step 6: Final answer
   x = 1,261.27