Finding the Fourth Proportional to 2,443.50, 3,665.86 and 712.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.50 : 3,665.86 = 712.13 : x
2. Step 2: Convert to fraction form
   2,443.50/3,665.86 = 712.13/x
3. Step 3: Cross multiply
   2,443.50x = 3,665.86 × 712.13
4. Step 4: Simplify right side
   2,443.50x = 2,610,548.77
5. Step 5: Solve for x
   x = 2,610,548.77/2,443.50
6. Step 6: Final answer
   x = 1,068.36