Finding the Fourth Proportional to 1,317.43, 1,818.06 and 719.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.43 : 1,818.06 = 719.94 : x
2. Step 2: Convert to fraction form
   1,317.43/1,818.06 = 719.94/x
3. Step 3: Cross multiply
   1,317.43x = 1,818.06 × 719.94
4. Step 4: Simplify right side
   1,317.43x = 1,308,885.03
5. Step 5: Solve for x
   x = 1,308,885.03/1,317.43
6. Step 6: Final answer
   x = 993.52