Finding the Fourth Proportional to 2,018.01, 2,784.78 and 1,121.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.01 : 2,784.78 = 1,121.79 : x
2. Step 2: Convert to fraction form
   2,018.01/2,784.78 = 1,121.79/x
3. Step 3: Cross multiply
   2,018.01x = 2,784.78 × 1,121.79
4. Step 4: Simplify right side
   2,018.01x = 3,123,938.36
5. Step 5: Solve for x
   x = 3,123,938.36/2,018.01
6. Step 6: Final answer
   x = 1,548.03