Finding the Fourth Proportional to 2,646.30, 3,968.37 and 914.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.30 : 3,968.37 = 914.70 : x
2. Step 2: Convert to fraction form
   2,646.30/3,968.37 = 914.70/x
3. Step 3: Cross multiply
   2,646.30x = 3,968.37 × 914.70
4. Step 4: Simplify right side
   2,646.30x = 3,629,868.04
5. Step 5: Solve for x
   x = 3,629,868.04/2,646.30
6. Step 6: Final answer
   x = 1,371.68