Finding the Fourth Proportional to 2,595.62, 3,893.98 and 864.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,595.62 : 3,893.98 = 864.38 : x
2. Step 2: Convert to fraction form
   2,595.62/3,893.98 = 864.38/x
3. Step 3: Cross multiply
   2,595.62x = 3,893.98 × 864.38
4. Step 4: Simplify right side
   2,595.62x = 3,365,878.43
5. Step 5: Solve for x
   x = 3,365,878.43/2,595.62
6. Step 6: Final answer
   x = 1,296.75