Finding the Fourth Proportional to 2,101.24, 2,898.96 and 1,216.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.24 : 2,898.96 = 1,216.56 : x
2. Step 2: Convert to fraction form
   2,101.24/2,898.96 = 1,216.56/x
3. Step 3: Cross multiply
   2,101.24x = 2,898.96 × 1,216.56
4. Step 4: Simplify right side
   2,101.24x = 3,526,758.78
5. Step 5: Solve for x
   x = 3,526,758.78/2,101.24
6. Step 6: Final answer
   x = 1,678.42