Finding the Fourth Proportional to 2,196.09, 3,289.57 and 1,315.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.09 : 3,289.57 = 1,315.82 : x
2. Step 2: Convert to fraction form
   2,196.09/3,289.57 = 1,315.82/x
3. Step 3: Cross multiply
   2,196.09x = 3,289.57 × 1,315.82
4. Step 4: Simplify right side
   2,196.09x = 4,328,486.93
5. Step 5: Solve for x
   x = 4,328,486.93/2,196.09
6. Step 6: Final answer
   x = 1,971.00