Finding the Fourth Proportional to 1,605.37, 2,215.41 and 942.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.37 : 2,215.41 = 942.23 : x
2. Step 2: Convert to fraction form
   1,605.37/2,215.41 = 942.23/x
3. Step 3: Cross multiply
   1,605.37x = 2,215.41 × 942.23
4. Step 4: Simplify right side
   1,605.37x = 2,087,425.76
5. Step 5: Solve for x
   x = 2,087,425.76/1,605.37
6. Step 6: Final answer
   x = 1,300.28