Finding the Fourth Proportional to 2,443.64, 3,665.79 and 712.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.64 : 3,665.79 = 712.25 : x
2. Step 2: Convert to fraction form
   2,443.64/3,665.79 = 712.25/x
3. Step 3: Cross multiply
   2,443.64x = 3,665.79 × 712.25
4. Step 4: Simplify right side
   2,443.64x = 2,610,958.93
5. Step 5: Solve for x
   x = 2,610,958.93/2,443.64
6. Step 6: Final answer
   x = 1,068.47