Finding the Fourth Proportional to 2,663.01, 3,993.86 and 1,181.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.01 : 3,993.86 = 1,181.40 : x
2. Step 2: Convert to fraction form
   2,663.01/3,993.86 = 1,181.40/x
3. Step 3: Cross multiply
   2,663.01x = 3,993.86 × 1,181.40
4. Step 4: Simplify right side
   2,663.01x = 4,718,340.30
5. Step 5: Solve for x
   x = 4,718,340.30/2,663.01
6. Step 6: Final answer
   x = 1,771.81