Finding the Fourth Proportional to 2,196.87, 3,288.85 and 1,372.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.87 : 3,288.85 = 1,372.65 : x
2. Step 2: Convert to fraction form
   2,196.87/3,288.85 = 1,372.65/x
3. Step 3: Cross multiply
   2,196.87x = 3,288.85 × 1,372.65
4. Step 4: Simplify right side
   2,196.87x = 4,514,431.91
5. Step 5: Solve for x
   x = 4,514,431.91/2,196.87
6. Step 6: Final answer
   x = 2,054.94