Finding the Fourth Proportional to 1,871.18, 2,582.09 and 1,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.18 : 2,582.09 = 1,085.10 : x
2. Step 2: Convert to fraction form
   1,871.18/2,582.09 = 1,085.10/x
3. Step 3: Cross multiply
   1,871.18x = 2,582.09 × 1,085.10
4. Step 4: Simplify right side
   1,871.18x = 2,801,825.86
5. Step 5: Solve for x
   x = 2,801,825.86/1,871.18
6. Step 6: Final answer
   x = 1,497.36