Finding the Fourth Proportional to 2,827.40, 4,241.76 and 978.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,827.40 : 4,241.76 = 978.53 : x
2. Step 2: Convert to fraction form
   2,827.40/4,241.76 = 978.53/x
3. Step 3: Cross multiply
   2,827.40x = 4,241.76 × 978.53
4. Step 4: Simplify right side
   2,827.40x = 4,150,668.20
5. Step 5: Solve for x
   x = 4,150,668.20/2,827.40
6. Step 6: Final answer
   x = 1,468.02