Finding the Fourth Proportional to 2,018.24, 2,783.74 and 1,421.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.24 : 2,783.74 = 1,421.98 : x
2. Step 2: Convert to fraction form
   2,018.24/2,783.74 = 1,421.98/x
3. Step 3: Cross multiply
   2,018.24x = 2,783.74 × 1,421.98
4. Step 4: Simplify right side
   2,018.24x = 3,958,422.61
5. Step 5: Solve for x
   x = 3,958,422.61/2,018.24
6. Step 6: Final answer
   x = 1,961.32