Finding the Fourth Proportional to 2,018.05, 2,784.78 and 1,178.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.05 : 2,784.78 = 1,178.99 : x
2. Step 2: Convert to fraction form
   2,018.05/2,784.78 = 1,178.99/x
3. Step 3: Cross multiply
   2,018.05x = 2,784.78 × 1,178.99
4. Step 4: Simplify right side
   2,018.05x = 3,283,216.39
5. Step 5: Solve for x
   x = 3,283,216.39/2,018.05
6. Step 6: Final answer
   x = 1,626.93