Finding the Fourth Proportional to 1,050.96, 1,450.71 and 719.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.96 : 1,450.71 = 719.31 : x
2. Step 2: Convert to fraction form
   1,050.96/1,450.71 = 719.31/x
3. Step 3: Cross multiply
   1,050.96x = 1,450.71 × 719.31
4. Step 4: Simplify right side
   1,050.96x = 1,043,510.21
5. Step 5: Solve for x
   x = 1,043,510.21/1,050.96
6. Step 6: Final answer
   x = 992.91