Finding the Fourth Proportional to 2,485.35, 3,429.27 and 1,423.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.35 : 3,429.27 = 1,423.17 : x
2. Step 2: Convert to fraction form
   2,485.35/3,429.27 = 1,423.17/x
3. Step 3: Cross multiply
   2,485.35x = 3,429.27 × 1,423.17
4. Step 4: Simplify right side
   2,485.35x = 4,880,434.19
5. Step 5: Solve for x
   x = 4,880,434.19/2,485.35
6. Step 6: Final answer
   x = 1,963.68