Finding the Fourth Proportional to 2,018.39, 3,026.78 and 785.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.39 : 3,026.78 = 785.62 : x
2. Step 2: Convert to fraction form
   2,018.39/3,026.78 = 785.62/x
3. Step 3: Cross multiply
   2,018.39x = 3,026.78 × 785.62
4. Step 4: Simplify right side
   2,018.39x = 2,377,887.41
5. Step 5: Solve for x
   x = 2,377,887.41/2,018.39
6. Step 6: Final answer
   x = 1,178.11