Finding the Fourth Proportional to 2,379.42, 3,564.86 and 1,405

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.42 : 3,564.86 = 1,405 : x
2. Step 2: Convert to fraction form
   2,379.42/3,564.86 = 1,405/x
3. Step 3: Cross multiply
   2,379.42x = 3,564.86 × 1,405
4. Step 4: Simplify right side
   2,379.42x = 5,008,628.30
5. Step 5: Solve for x
   x = 5,008,628.30/2,379.42
6. Step 6: Final answer
   x = 2,104.98