Finding the Fourth Proportional to 2,653.41, 3,978.04 and 1,191.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.41 : 3,978.04 = 1,191.54 : x
2. Step 2: Convert to fraction form
   2,653.41/3,978.04 = 1,191.54/x
3. Step 3: Cross multiply
   2,653.41x = 3,978.04 × 1,191.54
4. Step 4: Simplify right side
   2,653.41x = 4,739,993.78
5. Step 5: Solve for x
   x = 4,739,993.78/2,653.41
6. Step 6: Final answer
   x = 1,786.38