Finding the Fourth Proportional to 2,443.45, 3,665.43 and 712.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.45 : 3,665.43 = 712.08 : x
2. Step 2: Convert to fraction form
   2,443.45/3,665.43 = 712.08/x
3. Step 3: Cross multiply
   2,443.45x = 3,665.43 × 712.08
4. Step 4: Simplify right side
   2,443.45x = 2,610,079.39
5. Step 5: Solve for x
   x = 2,610,079.39/2,443.45
6. Step 6: Final answer
   x = 1,068.19