Finding the Fourth Proportional to 2,438.10, 3,659.04 and 978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438.10 : 3,659.04 = 978.48 : x
2. Step 2: Convert to fraction form
   2,438.10/3,659.04 = 978.48/x
3. Step 3: Cross multiply
   2,438.10x = 3,659.04 × 978.48
4. Step 4: Simplify right side
   2,438.10x = 3,580,297.46
5. Step 5: Solve for x
   x = 3,580,297.46/2,438.10
6. Step 6: Final answer
   x = 1,468.48