Finding the Fourth Proportional to 1,485.91, 2,227.61 and 936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.91 : 2,227.61 = 936.89 : x
2. Step 2: Convert to fraction form
   1,485.91/2,227.61 = 936.89/x
3. Step 3: Cross multiply
   1,485.91x = 2,227.61 × 936.89
4. Step 4: Simplify right side
   1,485.91x = 2,087,017.91
5. Step 5: Solve for x
   x = 2,087,017.91/1,485.91
6. Step 6: Final answer
   x = 1,404.54