Finding the Fourth Proportional to 3,405.32, 5,106.39 and 2,018.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.32 : 5,106.39 = 2,018.86 : x
2. Step 2: Convert to fraction form
   3,405.32/5,106.39 = 2,018.86/x
3. Step 3: Cross multiply
   3,405.32x = 5,106.39 × 2,018.86
4. Step 4: Simplify right side
   3,405.32x = 10,309,077.53
5. Step 5: Solve for x
   x = 10,309,077.53/3,405.32
6. Step 6: Final answer
   x = 3,027.34