Finding the Fourth Proportional to 1,730.46, 2,594.79 and 690.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,730.46 : 2,594.79 = 690.78 : x
2. Step 2: Convert to fraction form
   1,730.46/2,594.79 = 690.78/x
3. Step 3: Cross multiply
   1,730.46x = 2,594.79 × 690.78
4. Step 4: Simplify right side
   1,730.46x = 1,792,429.04
5. Step 5: Solve for x
   x = 1,792,429.04/1,730.46
6. Step 6: Final answer
   x = 1,035.81