Finding the Fourth Proportional to 1,314.89, 1,814.57 and 717.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.89 : 1,814.57 = 717.41 : x
2. Step 2: Convert to fraction form
   1,314.89/1,814.57 = 717.41/x
3. Step 3: Cross multiply
   1,314.89x = 1,814.57 × 717.41
4. Step 4: Simplify right side
   1,314.89x = 1,301,794.30
5. Step 5: Solve for x
   x = 1,301,794.30/1,314.89
6. Step 6: Final answer
   x = 990.04