Finding the Fourth Proportional to 1,871.52, 2,582.72 and 1,085.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.52 : 2,582.72 = 1,085.80 : x
2. Step 2: Convert to fraction form
   1,871.52/2,582.72 = 1,085.80/x
3. Step 3: Cross multiply
   1,871.52x = 2,582.72 × 1,085.80
4. Step 4: Simplify right side
   1,871.52x = 2,804,317.38
5. Step 5: Solve for x
   x = 2,804,317.38/1,871.52
6. Step 6: Final answer
   x = 1,498.42