Finding the Fourth Proportional to 1,328.91, 1,833.89 and 739.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.91 : 1,833.89 = 739.56 : x
2. Step 2: Convert to fraction form
   1,328.91/1,833.89 = 739.56/x
3. Step 3: Cross multiply
   1,328.91x = 1,833.89 × 739.56
4. Step 4: Simplify right side
   1,328.91x = 1,356,263.55
5. Step 5: Solve for x
   x = 1,356,263.55/1,328.91
6. Step 6: Final answer
   x = 1,020.59