Finding the Fourth Proportional to 2,018.78, 3,029.34 and 1,153.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.78 : 3,029.34 = 1,153.70 : x
2. Step 2: Convert to fraction form
   2,018.78/3,029.34 = 1,153.70/x
3. Step 3: Cross multiply
   2,018.78x = 3,029.34 × 1,153.70
4. Step 4: Simplify right side
   2,018.78x = 3,494,949.56
5. Step 5: Solve for x
   x = 3,494,949.56/2,018.78
6. Step 6: Final answer
   x = 1,731.22