Finding the Fourth Proportional to 1,871.25, 2,582.33 and 1,085.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.25 : 2,582.33 = 1,085.31 : x
2. Step 2: Convert to fraction form
   1,871.25/2,582.33 = 1,085.31/x
3. Step 3: Cross multiply
   1,871.25x = 2,582.33 × 1,085.31
4. Step 4: Simplify right side
   1,871.25x = 2,802,628.57
5. Step 5: Solve for x
   x = 2,802,628.57/1,871.25
6. Step 6: Final answer
   x = 1,497.73