Finding the Fourth Proportional to 2,007.55, 3,009.30 and 1,185.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.55 : 3,009.30 = 1,185.40 : x
2. Step 2: Convert to fraction form
   2,007.55/3,009.30 = 1,185.40/x
3. Step 3: Cross multiply
   2,007.55x = 3,009.30 × 1,185.40
4. Step 4: Simplify right side
   2,007.55x = 3,567,224.22
5. Step 5: Solve for x
   x = 3,567,224.22/2,007.55
6. Step 6: Final answer
   x = 1,776.90