Finding the Fourth Proportional to 1,423.80, 1,965.06 and 1,030.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.80 : 1,965.06 = 1,030.68 : x
2. Step 2: Convert to fraction form
   1,423.80/1,965.06 = 1,030.68/x
3. Step 3: Cross multiply
   1,423.80x = 1,965.06 × 1,030.68
4. Step 4: Simplify right side
   1,423.80x = 2,025,348.04
5. Step 5: Solve for x
   x = 2,025,348.04/1,423.80
6. Step 6: Final answer
   x = 1,422.49