Finding the Fourth Proportional to 1,422.50, 1,958.81 and 1,023.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.50 : 1,958.81 = 1,023.45 : x
2. Step 2: Convert to fraction form
   1,422.50/1,958.81 = 1,023.45/x
3. Step 3: Cross multiply
   1,422.50x = 1,958.81 × 1,023.45
4. Step 4: Simplify right side
   1,422.50x = 2,004,744.09
5. Step 5: Solve for x
   x = 2,004,744.09/1,422.50
6. Step 6: Final answer
   x = 1,409.31