Finding the Fourth Proportional to 2,681.12, 4,018.52 and 1,216.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,681.12 : 4,018.52 = 1,216.96 : x
2. Step 2: Convert to fraction form
   2,681.12/4,018.52 = 1,216.96/x
3. Step 3: Cross multiply
   2,681.12x = 4,018.52 × 1,216.96
4. Step 4: Simplify right side
   2,681.12x = 4,890,378.10
5. Step 5: Solve for x
   x = 4,890,378.10/2,681.12
6. Step 6: Final answer
   x = 1,824.01