Finding the Fourth Proportional to 2,926.73, 4,390.78 and 846.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,926.73 : 4,390.78 = 846.78 : x
2. Step 2: Convert to fraction form
   2,926.73/4,390.78 = 846.78/x
3. Step 3: Cross multiply
   2,926.73x = 4,390.78 × 846.78
4. Step 4: Simplify right side
   2,926.73x = 3,718,022.42
5. Step 5: Solve for x
   x = 3,718,022.42/2,926.73
6. Step 6: Final answer
   x = 1,270.37