Finding the Fourth Proportional to 1,871.51, 2,582.69 and 1,085.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.51 : 2,582.69 = 1,085.54 : x
2. Step 2: Convert to fraction form
   1,871.51/2,582.69 = 1,085.54/x
3. Step 3: Cross multiply
   1,871.51x = 2,582.69 × 1,085.54
4. Step 4: Simplify right side
   1,871.51x = 2,803,594.96
5. Step 5: Solve for x
   x = 2,803,594.96/1,871.51
6. Step 6: Final answer
   x = 1,498.04