Finding the Fourth Proportional to 2,978.10, 4,464.72 and 1,103.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.10 : 4,464.72 = 1,103.40 : x
2. Step 2: Convert to fraction form
   2,978.10/4,464.72 = 1,103.40/x
3. Step 3: Cross multiply
   2,978.10x = 4,464.72 × 1,103.40
4. Step 4: Simplify right side
   2,978.10x = 4,926,372.05
5. Step 5: Solve for x
   x = 4,926,372.05/2,978.10
6. Step 6: Final answer
   x = 1,654.20