Finding the Fourth Proportional to 2,734.84, 4,100.04 and 978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,734.84 : 4,100.04 = 978.88 : x
2. Step 2: Convert to fraction form
   2,734.84/4,100.04 = 978.88/x
3. Step 3: Cross multiply
   2,734.84x = 4,100.04 × 978.88
4. Step 4: Simplify right side
   2,734.84x = 4,013,447.16
5. Step 5: Solve for x
   x = 4,013,447.16/2,734.84
6. Step 6: Final answer
   x = 1,467.53