Finding the Fourth Proportional to 2,073.64, 3,110.28 and 978.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.64 : 3,110.28 = 978.28 : x
2. Step 2: Convert to fraction form
   2,073.64/3,110.28 = 978.28/x
3. Step 3: Cross multiply
   2,073.64x = 3,110.28 × 978.28
4. Step 4: Simplify right side
   2,073.64x = 3,042,724.72
5. Step 5: Solve for x
   x = 3,042,724.72/2,073.64
6. Step 6: Final answer
   x = 1,467.34