Finding the Fourth Proportional to 2,443.72, 3,665.76 and 712.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.72 : 3,665.76 = 712.48 : x
2. Step 2: Convert to fraction form
   2,443.72/3,665.76 = 712.48/x
3. Step 3: Cross multiply
   2,443.72x = 3,665.76 × 712.48
4. Step 4: Simplify right side
   2,443.72x = 2,611,780.68
5. Step 5: Solve for x
   x = 2,611,780.68/2,443.72
6. Step 6: Final answer
   x = 1,068.77