Finding the Fourth Proportional to 1,605.34, 2,215.40 and 941.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.34 : 2,215.40 = 941.95 : x
2. Step 2: Convert to fraction form
   1,605.34/2,215.40 = 941.95/x
3. Step 3: Cross multiply
   1,605.34x = 2,215.40 × 941.95
4. Step 4: Simplify right side
   1,605.34x = 2,086,796.03
5. Step 5: Solve for x
   x = 2,086,796.03/1,605.34
6. Step 6: Final answer
   x = 1,299.91