Finding the Fourth Proportional to 6,789.90, 10,185.31 and 1,859.13

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.90 : 10,185.31 = 1,859.13 : x
2. Step 2: Convert to fraction form
   6,789.90/10,185.31 = 1,859.13/x
3. Step 3: Cross multiply
   6,789.90x = 10,185.31 × 1,859.13
4. Step 4: Simplify right side
   6,789.90x = 18,935,815.38
5. Step 5: Solve for x
   x = 18,935,815.38/6,789.90
6. Step 6: Final answer
   x = 2,788.82