Finding the Fourth Proportional to 2,453.01, 3,385.16 and 1,405

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.01 : 3,385.16 = 1,405 : x
2. Step 2: Convert to fraction form
   2,453.01/3,385.16 = 1,405/x
3. Step 3: Cross multiply
   2,453.01x = 3,385.16 × 1,405
4. Step 4: Simplify right side
   2,453.01x = 4,756,149.80
5. Step 5: Solve for x
   x = 4,756,149.80/2,453.01
6. Step 6: Final answer
   x = 1,938.90