Finding the Fourth Proportional to 2,123.36, 3,182.16 and 966.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.36 : 3,182.16 = 966.40 : x
2. Step 2: Convert to fraction form
   2,123.36/3,182.16 = 966.40/x
3. Step 3: Cross multiply
   2,123.36x = 3,182.16 × 966.40
4. Step 4: Simplify right side
   2,123.36x = 3,075,239.42
5. Step 5: Solve for x
   x = 3,075,239.42/2,123.36
6. Step 6: Final answer
   x = 1,448.29