Finding the Fourth Proportional to 1,424.12, 1,965.96 and 900.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.12 : 1,965.96 = 900.38 : x
2. Step 2: Convert to fraction form
   1,424.12/1,965.96 = 900.38/x
3. Step 3: Cross multiply
   1,424.12x = 1,965.96 × 900.38
4. Step 4: Simplify right side
   1,424.12x = 1,770,111.06
5. Step 5: Solve for x
   x = 1,770,111.06/1,424.12
6. Step 6: Final answer
   x = 1,242.95