Finding the Fourth Proportional to 1,485.63, 2,228.22 and 936.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.63 : 2,228.22 = 936.15 : x
2. Step 2: Convert to fraction form
   1,485.63/2,228.22 = 936.15/x
3. Step 3: Cross multiply
   1,485.63x = 2,228.22 × 936.15
4. Step 4: Simplify right side
   1,485.63x = 2,085,948.15
5. Step 5: Solve for x
   x = 2,085,948.15/1,485.63
6. Step 6: Final answer
   x = 1,404.08