Finding the Fourth Proportional to 6,800.29, 10,200.69 and 1,870.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,800.29 : 10,200.69 = 1,870.31 : x
2. Step 2: Convert to fraction form
   6,800.29/10,200.69 = 1,870.31/x
3. Step 3: Cross multiply
   6,800.29x = 10,200.69 × 1,870.31
4. Step 4: Simplify right side
   6,800.29x = 19,078,478.02
5. Step 5: Solve for x
   x = 19,078,478.02/6,800.29
6. Step 6: Final answer
   x = 2,805.54