Finding the Fourth Proportional to 1,423.32, 1,963.72 and 1,123.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.32 : 1,963.72 = 1,123.62 : x
2. Step 2: Convert to fraction form
   1,423.32/1,963.72 = 1,123.62/x
3. Step 3: Cross multiply
   1,423.32x = 1,963.72 × 1,123.62
4. Step 4: Simplify right side
   1,423.32x = 2,206,475.07
5. Step 5: Solve for x
   x = 2,206,475.07/1,423.32
6. Step 6: Final answer
   x = 1,550.23