Finding the Fourth Proportional to 1,712.53, 2,363.31 and 1,013.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,712.53 : 2,363.31 = 1,013.89 : x
2. Step 2: Convert to fraction form
   1,712.53/2,363.31 = 1,013.89/x
3. Step 3: Cross multiply
   1,712.53x = 2,363.31 × 1,013.89
4. Step 4: Simplify right side
   1,712.53x = 2,396,136.38
5. Step 5: Solve for x
   x = 2,396,136.38/1,712.53
6. Step 6: Final answer
   x = 1,399.18