Finding the Fourth Proportional to 3,946.50, 5,918.58 and 1,865.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,946.50 : 5,918.58 = 1,865.34 : x
2. Step 2: Convert to fraction form
   3,946.50/5,918.58 = 1,865.34/x
3. Step 3: Cross multiply
   3,946.50x = 5,918.58 × 1,865.34
4. Step 4: Simplify right side
   3,946.50x = 11,040,164.02
5. Step 5: Solve for x
   x = 11,040,164.02/3,946.50
6. Step 6: Final answer
   x = 2,797.46