Finding the Fourth Proportional to 2,185.99, 3,016.74 and 1,191.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.99 : 3,016.74 = 1,191.30 : x
2. Step 2: Convert to fraction form
   2,185.99/3,016.74 = 1,191.30/x
3. Step 3: Cross multiply
   2,185.99x = 3,016.74 × 1,191.30
4. Step 4: Simplify right side
   2,185.99x = 3,593,842.36
5. Step 5: Solve for x
   x = 3,593,842.36/2,185.99
6. Step 6: Final answer
   x = 1,644.03