Finding the Fourth Proportional to 6,870.69, 10,306.08 and 1,940.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.69 : 10,306.08 = 1,940.31 : x
2. Step 2: Convert to fraction form
   6,870.69/10,306.08 = 1,940.31/x
3. Step 3: Cross multiply
   6,870.69x = 10,306.08 × 1,940.31
4. Step 4: Simplify right side
   6,870.69x = 19,996,990.08
5. Step 5: Solve for x
   x = 19,996,990.08/6,870.69
6. Step 6: Final answer
   x = 2,910.48