Finding the Fourth Proportional to 1,689.91, 2,530.31 and 1,103.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.91 : 2,530.31 = 1,103.46 : x
2. Step 2: Convert to fraction form
   1,689.91/2,530.31 = 1,103.46/x
3. Step 3: Cross multiply
   1,689.91x = 2,530.31 × 1,103.46
4. Step 4: Simplify right side
   1,689.91x = 2,792,100.85
5. Step 5: Solve for x
   x = 2,792,100.85/1,689.91
6. Step 6: Final answer
   x = 1,652.22