Finding the Fourth Proportional to 2,196.64, 3,294.96 and 1,284

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.64 : 3,294.96 = 1,284 : x
2. Step 2: Convert to fraction form
   2,196.64/3,294.96 = 1,284/x
3. Step 3: Cross multiply
   2,196.64x = 3,294.96 × 1,284
4. Step 4: Simplify right side
   2,196.64x = 4,230,728.64
5. Step 5: Solve for x
   x = 4,230,728.64/2,196.64
6. Step 6: Final answer
   x = 1,926