Finding the Fourth Proportional to 2,196.65, 3,294.95 and 897.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.65 : 3,294.95 = 897.21 : x
2. Step 2: Convert to fraction form
   2,196.65/3,294.95 = 897.21/x
3. Step 3: Cross multiply
   2,196.65x = 3,294.95 × 897.21
4. Step 4: Simplify right side
   2,196.65x = 2,956,245.61
5. Step 5: Solve for x
   x = 2,956,245.61/2,196.65
6. Step 6: Final answer
   x = 1,345.80