Finding the Fourth Proportional to 1,963.89, 2,946.84 and 1,086.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,963.89 : 2,946.84 = 1,086.23 : x
2. Step 2: Convert to fraction form
   1,963.89/2,946.84 = 1,086.23/x
3. Step 3: Cross multiply
   1,963.89x = 2,946.84 × 1,086.23
4. Step 4: Simplify right side
   1,963.89x = 3,200,946.01
5. Step 5: Solve for x
   x = 3,200,946.01/1,963.89
6. Step 6: Final answer
   x = 1,629.90