Finding the Fourth Proportional to 3,959.58, 5,939.82 and 1,186.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.58 : 5,939.82 = 1,186.41 : x
2. Step 2: Convert to fraction form
   3,959.58/5,939.82 = 1,186.41/x
3. Step 3: Cross multiply
   3,959.58x = 5,939.82 × 1,186.41
4. Step 4: Simplify right side
   3,959.58x = 7,047,061.85
5. Step 5: Solve for x
   x = 7,047,061.85/3,959.58
6. Step 6: Final answer
   x = 1,779.75