Finding the Fourth Proportional to 2,978.66, 4,468.44 and 1,105.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.66 : 4,468.44 = 1,105.16 : x
2. Step 2: Convert to fraction form
   2,978.66/4,468.44 = 1,105.16/x
3. Step 3: Cross multiply
   2,978.66x = 4,468.44 × 1,105.16
4. Step 4: Simplify right side
   2,978.66x = 4,938,341.15
5. Step 5: Solve for x
   x = 4,938,341.15/2,978.66
6. Step 6: Final answer
   x = 1,657.91