Finding the Fourth Proportional to 1,605.35, 2,215.67 and 942.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.35 : 2,215.67 = 942.59 : x
2. Step 2: Convert to fraction form
   1,605.35/2,215.67 = 942.59/x
3. Step 3: Cross multiply
   1,605.35x = 2,215.67 × 942.59
4. Step 4: Simplify right side
   1,605.35x = 2,088,462.05
5. Step 5: Solve for x
   x = 2,088,462.05/1,605.35
6. Step 6: Final answer
   x = 1,300.94