Finding the Fourth Proportional to 2,486.50, 3,729.78 and 1,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,486.50 : 3,729.78 = 1,118.50 : x
2. Step 2: Convert to fraction form
   2,486.50/3,729.78 = 1,118.50/x
3. Step 3: Cross multiply
   2,486.50x = 3,729.78 × 1,118.50
4. Step 4: Simplify right side
   2,486.50x = 4,171,758.93
5. Step 5: Solve for x
   x = 4,171,758.93/2,486.50
6. Step 6: Final answer
   x = 1,677.76