Finding the Fourth Proportional to 6,456.86, 9,685.18 and 1,776.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.86 : 9,685.18 = 1,776.86 : x
2. Step 2: Convert to fraction form
   6,456.86/9,685.18 = 1,776.86/x
3. Step 3: Cross multiply
   6,456.86x = 9,685.18 × 1,776.86
4. Step 4: Simplify right side
   6,456.86x = 17,209,208.93
5. Step 5: Solve for x
   x = 17,209,208.93/6,456.86
6. Step 6: Final answer
   x = 2,665.26