Finding the Fourth Proportional to 2,978.29, 4,467.28 and 786.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.29 : 4,467.28 = 786.94 : x
2. Step 2: Convert to fraction form
   2,978.29/4,467.28 = 786.94/x
3. Step 3: Cross multiply
   2,978.29x = 4,467.28 × 786.94
4. Step 4: Simplify right side
   2,978.29x = 3,515,481.32
5. Step 5: Solve for x
   x = 3,515,481.32/2,978.29
6. Step 6: Final answer
   x = 1,180.37