Finding the Fourth Proportional to 1,267.89, 1,901.83 and 402.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267.89 : 1,901.83 = 402.27 : x
2. Step 2: Convert to fraction form
   1,267.89/1,901.83 = 402.27/x
3. Step 3: Cross multiply
   1,267.89x = 1,901.83 × 402.27
4. Step 4: Simplify right side
   1,267.89x = 765,049.15
5. Step 5: Solve for x
   x = 765,049.15/1,267.89
6. Step 6: Final answer
   x = 603.40