Finding the Fourth Proportional to 3,818.59, 5,728.79 and 1,185.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.59 : 5,728.79 = 1,185.96 : x
2. Step 2: Convert to fraction form
   3,818.59/5,728.79 = 1,185.96/x
3. Step 3: Cross multiply
   3,818.59x = 5,728.79 × 1,185.96
4. Step 4: Simplify right side
   3,818.59x = 6,794,131.34
5. Step 5: Solve for x
   x = 6,794,131.34/3,818.59
6. Step 6: Final answer
   x = 1,779.22