Finding the Fourth Proportional to 1,167.20, 1,610.61 and 719.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.20 : 1,610.61 = 719.00 : x
2. Step 2: Convert to fraction form
   1,167.20/1,610.61 = 719.00/x
3. Step 3: Cross multiply
   1,167.20x = 1,610.61 × 719.00
4. Step 4: Simplify right side
   1,167.20x = 1,158,020.54
5. Step 5: Solve for x
   x = 1,158,020.54/1,167.20
6. Step 6: Final answer
   x = 992.14