Finding the Fourth Proportional to 1,357.38, 2,034.72 and 739.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.38 : 2,034.72 = 739.80 : x
2. Step 2: Convert to fraction form
   1,357.38/2,034.72 = 739.80/x
3. Step 3: Cross multiply
   1,357.38x = 2,034.72 × 739.80
4. Step 4: Simplify right side
   1,357.38x = 1,505,285.86
5. Step 5: Solve for x
   x = 1,505,285.86/1,357.38
6. Step 6: Final answer
   x = 1,108.96