Finding the Fourth Proportional to 1,033.61, 1,425.89 and 719.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.61 : 1,425.89 = 719.61 : x
2. Step 2: Convert to fraction form
   1,033.61/1,425.89 = 719.61/x
3. Step 3: Cross multiply
   1,033.61x = 1,425.89 × 719.61
4. Step 4: Simplify right side
   1,033.61x = 1,026,081.10
5. Step 5: Solve for x
   x = 1,026,081.10/1,033.61
6. Step 6: Final answer
   x = 992.72