Finding the Fourth Proportional to 2,018.17, 2,784.22 and 1,355.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.17 : 2,784.22 = 1,355.23 : x
2. Step 2: Convert to fraction form
   2,018.17/2,784.22 = 1,355.23/x
3. Step 3: Cross multiply
   2,018.17x = 2,784.22 × 1,355.23
4. Step 4: Simplify right side
   2,018.17x = 3,773,266.19
5. Step 5: Solve for x
   x = 3,773,266.19/2,018.17
6. Step 6: Final answer
   x = 1,869.65