Finding the Fourth Proportional to 2,018.20, 3,025.86 and 784.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.20 : 3,025.86 = 784.58 : x
2. Step 2: Convert to fraction form
   2,018.20/3,025.86 = 784.58/x
3. Step 3: Cross multiply
   2,018.20x = 3,025.86 × 784.58
4. Step 4: Simplify right side
   2,018.20x = 2,374,029.24
5. Step 5: Solve for x
   x = 2,374,029.24/2,018.20
6. Step 6: Final answer
   x = 1,176.31