Finding the Fourth Proportional to 2,018.12, 3,025.24 and 784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.12 : 3,025.24 = 784.56 : x
2. Step 2: Convert to fraction form
   2,018.12/3,025.24 = 784.56/x
3. Step 3: Cross multiply
   2,018.12x = 3,025.24 × 784.56
4. Step 4: Simplify right side
   2,018.12x = 2,373,482.29
5. Step 5: Solve for x
   x = 2,373,482.29/2,018.12
6. Step 6: Final answer
   x = 1,176.09