Finding the Fourth Proportional to 1,605.24, 2,215.24 and 942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.24 : 2,215.24 = 942.10 : x
2. Step 2: Convert to fraction form
   1,605.24/2,215.24 = 942.10/x
3. Step 3: Cross multiply
   1,605.24x = 2,215.24 × 942.10
4. Step 4: Simplify right side
   1,605.24x = 2,086,977.60
5. Step 5: Solve for x
   x = 2,086,977.60/1,605.24
6. Step 6: Final answer
   x = 1,300.10