Finding the Fourth Proportional to 1,363.81, 1,883.78 and 1,186.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.81 : 1,883.78 = 1,186.42 : x
2. Step 2: Convert to fraction form
   1,363.81/1,883.78 = 1,186.42/x
3. Step 3: Cross multiply
   1,363.81x = 1,883.78 × 1,186.42
4. Step 4: Simplify right side
   1,363.81x = 2,234,954.27
5. Step 5: Solve for x
   x = 2,234,954.27/1,363.81
6. Step 6: Final answer
   x = 1,638.76