Finding the Fourth Proportional to 2,073.88, 3,110.76 and 978.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.88 : 3,110.76 = 978.34 : x
2. Step 2: Convert to fraction form
   2,073.88/3,110.76 = 978.34/x
3. Step 3: Cross multiply
   2,073.88x = 3,110.76 × 978.34
4. Step 4: Simplify right side
   2,073.88x = 3,043,380.94
5. Step 5: Solve for x
   x = 3,043,380.94/2,073.88
6. Step 6: Final answer
   x = 1,467.48