Finding the Fourth Proportional to 2,453.31, 3,385.53 and 1,405.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.31 : 3,385.53 = 1,405.32 : x
2. Step 2: Convert to fraction form
   2,453.31/3,385.53 = 1,405.32/x
3. Step 3: Cross multiply
   2,453.31x = 3,385.53 × 1,405.32
4. Step 4: Simplify right side
   2,453.31x = 4,757,753.02
5. Step 5: Solve for x
   x = 4,757,753.02/2,453.31
6. Step 6: Final answer
   x = 1,939.32