Finding the Fourth Proportional to 2,405.34, 3,609.54 and 866.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.34 : 3,609.54 = 866.34 : x
2. Step 2: Convert to fraction form
   2,405.34/3,609.54 = 866.34/x
3. Step 3: Cross multiply
   2,405.34x = 3,609.54 × 866.34
4. Step 4: Simplify right side
   2,405.34x = 3,127,088.88
5. Step 5: Solve for x
   x = 3,127,088.88/2,405.34
6. Step 6: Final answer
   x = 1,300.06