Finding the Fourth Proportional to 1,298.83, 1,792.15 and 739.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.83 : 1,792.15 = 739.15 : x
2. Step 2: Convert to fraction form
   1,298.83/1,792.15 = 739.15/x
3. Step 3: Cross multiply
   1,298.83x = 1,792.15 × 739.15
4. Step 4: Simplify right side
   1,298.83x = 1,324,667.67
5. Step 5: Solve for x
   x = 1,324,667.67/1,298.83
6. Step 6: Final answer
   x = 1,019.89