Finding the Fourth Proportional to 1,229.52, 1,835.25 and 1,085.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.52 : 1,835.25 = 1,085.34 : x
2. Step 2: Convert to fraction form
   1,229.52/1,835.25 = 1,085.34/x
3. Step 3: Cross multiply
   1,229.52x = 1,835.25 × 1,085.34
4. Step 4: Simplify right side
   1,229.52x = 1,991,870.24
5. Step 5: Solve for x
   x = 1,991,870.24/1,229.52
6. Step 6: Final answer
   x = 1,620.04