Finding the Fourth Proportional to 2,574.42, 3,861.57 and 1,405.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.42 : 3,861.57 = 1,405.56 : x
2. Step 2: Convert to fraction form
   2,574.42/3,861.57 = 1,405.56/x
3. Step 3: Cross multiply
   2,574.42x = 3,861.57 × 1,405.56
4. Step 4: Simplify right side
   2,574.42x = 5,427,668.33
5. Step 5: Solve for x
   x = 5,427,668.33/2,574.42
6. Step 6: Final answer
   x = 2,108.31