Finding the Fourth Proportional to 1,262.58, 1,742.49 and 739.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262.58 : 1,742.49 = 739.05 : x
2. Step 2: Convert to fraction form
   1,262.58/1,742.49 = 739.05/x
3. Step 3: Cross multiply
   1,262.58x = 1,742.49 × 739.05
4. Step 4: Simplify right side
   1,262.58x = 1,287,784.73
5. Step 5: Solve for x
   x = 1,287,784.73/1,262.58
6. Step 6: Final answer
   x = 1,019.96