Finding the Fourth Proportional to 2,073.33, 3,111.55 and 978.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.33 : 3,111.55 = 978.47 : x
2. Step 2: Convert to fraction form
   2,073.33/3,111.55 = 978.47/x
3. Step 3: Cross multiply
   2,073.33x = 3,111.55 × 978.47
4. Step 4: Simplify right side
   2,073.33x = 3,044,542.77
5. Step 5: Solve for x
   x = 3,044,542.77/2,073.33
6. Step 6: Final answer
   x = 1,468.43