Finding the Fourth Proportional to 1,662.16, 2,293.68 and 963.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.16 : 2,293.68 = 963.40 : x
2. Step 2: Convert to fraction form
   1,662.16/2,293.68 = 963.40/x
3. Step 3: Cross multiply
   1,662.16x = 2,293.68 × 963.40
4. Step 4: Simplify right side
   1,662.16x = 2,209,731.31
5. Step 5: Solve for x
   x = 2,209,731.31/1,662.16
6. Step 6: Final answer
   x = 1,329.43