Finding the Fourth Proportional to 1,050.98, 1,449.09 and 719.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.98 : 1,449.09 = 719.69 : x
2. Step 2: Convert to fraction form
   1,050.98/1,449.09 = 719.69/x
3. Step 3: Cross multiply
   1,050.98x = 1,449.09 × 719.69
4. Step 4: Simplify right side
   1,050.98x = 1,042,888.34
5. Step 5: Solve for x
   x = 1,042,888.34/1,050.98
6. Step 6: Final answer
   x = 992.31