Finding the Fourth Proportional to 2,789.61, 4,185.05 and 940.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.61 : 4,185.05 = 940.68 : x
2. Step 2: Convert to fraction form
   2,789.61/4,185.05 = 940.68/x
3. Step 3: Cross multiply
   2,789.61x = 4,185.05 × 940.68
4. Step 4: Simplify right side
   2,789.61x = 3,936,792.83
5. Step 5: Solve for x
   x = 3,936,792.83/2,789.61
6. Step 6: Final answer
   x = 1,411.23