Finding the Fourth Proportional to 1,336.50, 2,005.02 and 719.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.50 : 2,005.02 = 719.82 : x
2. Step 2: Convert to fraction form
   1,336.50/2,005.02 = 719.82/x
3. Step 3: Cross multiply
   1,336.50x = 2,005.02 × 719.82
4. Step 4: Simplify right side
   1,336.50x = 1,443,253.50
5. Step 5: Solve for x
   x = 1,443,253.50/1,336.50
6. Step 6: Final answer
   x = 1,079.88