Finding the Fourth Proportional to 1,085.10, 1,497.42 and 849.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.10 : 1,497.42 = 849.30 : x
2. Step 2: Convert to fraction form
   1,085.10/1,497.42 = 849.30/x
3. Step 3: Cross multiply
   1,085.10x = 1,497.42 × 849.30
4. Step 4: Simplify right side
   1,085.10x = 1,271,758.81
5. Step 5: Solve for x
   x = 1,271,758.81/1,085.10
6. Step 6: Final answer
   x = 1,172.02