Finding the Fourth Proportional to 2,518.83, 3,777.17 and 978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.83 : 3,777.17 = 978.75 : x
2. Step 2: Convert to fraction form
   2,518.83/3,777.17 = 978.75/x
3. Step 3: Cross multiply
   2,518.83x = 3,777.17 × 978.75
4. Step 4: Simplify right side
   2,518.83x = 3,696,900.24
5. Step 5: Solve for x
   x = 3,696,900.24/2,518.83
6. Step 6: Final answer
   x = 1,467.71