Finding the Fourth Proportional to 1,424.67, 1,965.92 and 900.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.67 : 1,965.92 = 900.69 : x
2. Step 2: Convert to fraction form
   1,424.67/1,965.92 = 900.69/x
3. Step 3: Cross multiply
   1,424.67x = 1,965.92 × 900.69
4. Step 4: Simplify right side
   1,424.67x = 1,770,679.98
5. Step 5: Solve for x
   x = 1,770,679.98/1,424.67
6. Step 6: Final answer
   x = 1,242.87