Finding the Fourth Proportional to 1,871.98, 2,582.72 and 1,085.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.98 : 2,582.72 = 1,085.74 : x
2. Step 2: Convert to fraction form
   1,871.98/2,582.72 = 1,085.74/x
3. Step 3: Cross multiply
   1,871.98x = 2,582.72 × 1,085.74
4. Step 4: Simplify right side
   1,871.98x = 2,804,162.41
5. Step 5: Solve for x
   x = 2,804,162.41/1,871.98
6. Step 6: Final answer
   x = 1,497.97