Finding the Fourth Proportional to 1,124.02, 1,683.42 and 1,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.02 : 1,683.42 = 1,085.10 : x
2. Step 2: Convert to fraction form
   1,124.02/1,683.42 = 1,085.10/x
3. Step 3: Cross multiply
   1,124.02x = 1,683.42 × 1,085.10
4. Step 4: Simplify right side
   1,124.02x = 1,826,679.04
5. Step 5: Solve for x
   x = 1,826,679.04/1,124.02
6. Step 6: Final answer
   x = 1,625.13