Finding the Fourth Proportional to 2,018.32, 2,784.79 and 1,178.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.32 : 2,784.79 = 1,178.54 : x
2. Step 2: Convert to fraction form
   2,018.32/2,784.79 = 1,178.54/x
3. Step 3: Cross multiply
   2,018.32x = 2,784.79 × 1,178.54
4. Step 4: Simplify right side
   2,018.32x = 3,281,980.51
5. Step 5: Solve for x
   x = 3,281,980.51/2,018.32
6. Step 6: Final answer
   x = 1,626.10