Finding the Fourth Proportional to 2,453.42, 3,385.56 and 1,405.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.42 : 3,385.56 = 1,405.46 : x
2. Step 2: Convert to fraction form
   2,453.42/3,385.56 = 1,405.46/x
3. Step 3: Cross multiply
   2,453.42x = 3,385.56 × 1,405.46
4. Step 4: Simplify right side
   2,453.42x = 4,758,269.16
5. Step 5: Solve for x
   x = 4,758,269.16/2,453.42
6. Step 6: Final answer
   x = 1,939.44