Finding the Fourth Proportional to 4,111.72, 6,168.19 and 1,189.65

Step by Step Solution

1. Step 1: Write the proportion equation
   4,111.72 : 6,168.19 = 1,189.65 : x
2. Step 2: Convert to fraction form
   4,111.72/6,168.19 = 1,189.65/x
3. Step 3: Cross multiply
   4,111.72x = 6,168.19 × 1,189.65
4. Step 4: Simplify right side
   4,111.72x = 7,337,987.23
5. Step 5: Solve for x
   x = 7,337,987.23/4,111.72
6. Step 6: Final answer
   x = 1,784.65