Finding the Fourth Proportional to 1,396.50, 2,095.47 and 712.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.50 : 2,095.47 = 712.50 : x
2. Step 2: Convert to fraction form
   1,396.50/2,095.47 = 712.50/x
3. Step 3: Cross multiply
   1,396.50x = 2,095.47 × 712.50
4. Step 4: Simplify right side
   1,396.50x = 1,493,022.38
5. Step 5: Solve for x
   x = 1,493,022.38/1,396.50
6. Step 6: Final answer
   x = 1,069.12