Finding the Fourth Proportional to 6,456.42, 9,680.73 and 2,897.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.42 : 9,680.73 = 2,897.89 : x
2. Step 2: Convert to fraction form
   6,456.42/9,680.73 = 2,897.89/x
3. Step 3: Cross multiply
   6,456.42x = 9,680.73 × 2,897.89
4. Step 4: Simplify right side
   6,456.42x = 28,053,690.66
5. Step 5: Solve for x
   x = 28,053,690.66/6,456.42
6. Step 6: Final answer
   x = 4,345.08