Finding the Fourth Proportional to 1,308.84, 1,962.16 and 896.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.84 : 1,962.16 = 896.96 : x
2. Step 2: Convert to fraction form
   1,308.84/1,962.16 = 896.96/x
3. Step 3: Cross multiply
   1,308.84x = 1,962.16 × 896.96
4. Step 4: Simplify right side
   1,308.84x = 1,759,979.03
5. Step 5: Solve for x
   x = 1,759,979.03/1,308.84
6. Step 6: Final answer
   x = 1,344.69