Finding the Fourth Proportional to 2,018.29, 2,785.12 and 1,121.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.29 : 2,785.12 = 1,121.98 : x
2. Step 2: Convert to fraction form
   2,018.29/2,785.12 = 1,121.98/x
3. Step 3: Cross multiply
   2,018.29x = 2,785.12 × 1,121.98
4. Step 4: Simplify right side
   2,018.29x = 3,124,848.94
5. Step 5: Solve for x
   x = 3,124,848.94/2,018.29
6. Step 6: Final answer
   x = 1,548.27