Finding the Fourth Proportional to 1,104.95, 1,521.55 and 957.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.95 : 1,521.55 = 957.35 : x
2. Step 2: Convert to fraction form
   1,104.95/1,521.55 = 957.35/x
3. Step 3: Cross multiply
   1,104.95x = 1,521.55 × 957.35
4. Step 4: Simplify right side
   1,104.95x = 1,456,655.89
5. Step 5: Solve for x
   x = 1,456,655.89/1,104.95
6. Step 6: Final answer
   x = 1,318.30