Finding the Fourth Proportional to 2,379.56, 3,284.12 and 1,435.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.56 : 3,284.12 = 1,435.40 : x
2. Step 2: Convert to fraction form
   2,379.56/3,284.12 = 1,435.40/x
3. Step 3: Cross multiply
   2,379.56x = 3,284.12 × 1,435.40
4. Step 4: Simplify right side
   2,379.56x = 4,714,025.85
5. Step 5: Solve for x
   x = 4,714,025.85/2,379.56
6. Step 6: Final answer
   x = 1,981.05