Finding the Fourth Proportional to 2,663.70, 3,986.37 and 1,836.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.70 : 3,986.37 = 1,836.42 : x
2. Step 2: Convert to fraction form
   2,663.70/3,986.37 = 1,836.42/x
3. Step 3: Cross multiply
   2,663.70x = 3,986.37 × 1,836.42
4. Step 4: Simplify right side
   2,663.70x = 7,320,649.60
5. Step 5: Solve for x
   x = 7,320,649.60/2,663.70
6. Step 6: Final answer
   x = 2,748.30