Finding the Fourth Proportional to 2,326.34, 3,490.44 and 866.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.34 : 3,490.44 = 866.72 : x
2. Step 2: Convert to fraction form
   2,326.34/3,490.44 = 866.72/x
3. Step 3: Cross multiply
   2,326.34x = 3,490.44 × 866.72
4. Step 4: Simplify right side
   2,326.34x = 3,025,234.16
5. Step 5: Solve for x
   x = 3,025,234.16/2,326.34
6. Step 6: Final answer
   x = 1,300.43