Finding the Fourth Proportional to 2,792.99, 4,189.47 and 684.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,792.99 : 4,189.47 = 684.59 : x
2. Step 2: Convert to fraction form
   2,792.99/4,189.47 = 684.59/x
3. Step 3: Cross multiply
   2,792.99x = 4,189.47 × 684.59
4. Step 4: Simplify right side
   2,792.99x = 2,868,069.27
5. Step 5: Solve for x
   x = 2,868,069.27/2,792.99
6. Step 6: Final answer
   x = 1,026.88