Finding the Fourth Proportional to 2,827.87, 4,241.50 and 978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,827.87 : 4,241.50 = 978.84 : x
2. Step 2: Convert to fraction form
   2,827.87/4,241.50 = 978.84/x
3. Step 3: Cross multiply
   2,827.87x = 4,241.50 × 978.84
4. Step 4: Simplify right side
   2,827.87x = 4,151,747.41
5. Step 5: Solve for x
   x = 4,151,747.41/2,827.87
6. Step 6: Final answer
   x = 1,468.15