Finding the Fourth Proportional to 2,485.37, 3,429.78 and 1,423.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.37 : 3,429.78 = 1,423.32 : x
2. Step 2: Convert to fraction form
   2,485.37/3,429.78 = 1,423.32/x
3. Step 3: Cross multiply
   2,485.37x = 3,429.78 × 1,423.32
4. Step 4: Simplify right side
   2,485.37x = 4,881,674.47
5. Step 5: Solve for x
   x = 4,881,674.47/2,485.37
6. Step 6: Final answer
   x = 1,964.17