Finding the Fourth Proportional to 1,401.74, 1,933.53 and 1,009.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.74 : 1,933.53 = 1,009.28 : x
2. Step 2: Convert to fraction form
   1,401.74/1,933.53 = 1,009.28/x
3. Step 3: Cross multiply
   1,401.74x = 1,933.53 × 1,009.28
4. Step 4: Simplify right side
   1,401.74x = 1,951,473.16
5. Step 5: Solve for x
   x = 1,951,473.16/1,401.74
6. Step 6: Final answer
   x = 1,392.18