Finding the Fourth Proportional to 2,530.62, 3,796.74 and 2,118.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.62 : 3,796.74 = 2,118.78 : x
2. Step 2: Convert to fraction form
   2,530.62/3,796.74 = 2,118.78/x
3. Step 3: Cross multiply
   2,530.62x = 3,796.74 × 2,118.78
4. Step 4: Simplify right side
   2,530.62x = 8,044,456.78
5. Step 5: Solve for x
   x = 8,044,456.78/2,530.62
6. Step 6: Final answer
   x = 3,178.85