Finding the Fourth Proportional to 2,665.96, 3,673.83 and 1,918.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.96 : 3,673.83 = 1,918.60 : x
2. Step 2: Convert to fraction form
   2,665.96/3,673.83 = 1,918.60/x
3. Step 3: Cross multiply
   2,665.96x = 3,673.83 × 1,918.60
4. Step 4: Simplify right side
   2,665.96x = 7,048,610.24
5. Step 5: Solve for x
   x = 7,048,610.24/2,665.96
6. Step 6: Final answer
   x = 2,643.93