Finding the Fourth Proportional to 2,326.73, 3,490.02 and 865.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.73 : 3,490.02 = 865.89 : x
2. Step 2: Convert to fraction form
   2,326.73/3,490.02 = 865.89/x
3. Step 3: Cross multiply
   2,326.73x = 3,490.02 × 865.89
4. Step 4: Simplify right side
   2,326.73x = 3,021,973.42
5. Step 5: Solve for x
   x = 3,021,973.42/2,326.73
6. Step 6: Final answer
   x = 1,298.81