Finding the Fourth Proportional to 2,416.42, 3,621.82 and 1,978.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,416.42 : 3,621.82 = 1,978.41 : x
2. Step 2: Convert to fraction form
   2,416.42/3,621.82 = 1,978.41/x
3. Step 3: Cross multiply
   2,416.42x = 3,621.82 × 1,978.41
4. Step 4: Simplify right side
   2,416.42x = 7,165,435.01
5. Step 5: Solve for x
   x = 7,165,435.01/2,416.42
6. Step 6: Final answer
   x = 2,965.32