Finding the Fourth Proportional to 2,443.77, 3,665.36 and 712.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.77 : 3,665.36 = 712.40 : x
2. Step 2: Convert to fraction form
   2,443.77/3,665.36 = 712.40/x
3. Step 3: Cross multiply
   2,443.77x = 3,665.36 × 712.40
4. Step 4: Simplify right side
   2,443.77x = 2,611,180.58
5. Step 5: Solve for x
   x = 2,611,180.58/2,443.77
6. Step 6: Final answer
   x = 1,068.51