Finding the Fourth Proportional to 1,423.55, 1,964.57 and 1,073.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.55 : 1,964.57 = 1,073.63 : x
2. Step 2: Convert to fraction form
   1,423.55/1,964.57 = 1,073.63/x
3. Step 3: Cross multiply
   1,423.55x = 1,964.57 × 1,073.63
4. Step 4: Simplify right side
   1,423.55x = 2,109,206.10
5. Step 5: Solve for x
   x = 2,109,206.10/1,423.55
6. Step 6: Final answer
   x = 1,481.66