Finding the Fourth Proportional to 1,069.09, 1,474.55 and 719.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.09 : 1,474.55 = 719.71 : x
2. Step 2: Convert to fraction form
   1,069.09/1,474.55 = 719.71/x
3. Step 3: Cross multiply
   1,069.09x = 1,474.55 × 719.71
4. Step 4: Simplify right side
   1,069.09x = 1,061,244.78
5. Step 5: Solve for x
   x = 1,061,244.78/1,069.09
6. Step 6: Final answer
   x = 992.66