Finding the Fourth Proportional to 1,552.74, 2,331.27 and 978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.74 : 2,331.27 = 978.18 : x
2. Step 2: Convert to fraction form
   1,552.74/2,331.27 = 978.18/x
3. Step 3: Cross multiply
   1,552.74x = 2,331.27 × 978.18
4. Step 4: Simplify right side
   1,552.74x = 2,280,401.69
5. Step 5: Solve for x
   x = 2,280,401.69/1,552.74
6. Step 6: Final answer
   x = 1,468.63