Finding the Fourth Proportional to 1,871.69, 2,583.07 and 1,085.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.69 : 2,583.07 = 1,085.86 : x
2. Step 2: Convert to fraction form
   1,871.69/2,583.07 = 1,085.86/x
3. Step 3: Cross multiply
   1,871.69x = 2,583.07 × 1,085.86
4. Step 4: Simplify right side
   1,871.69x = 2,804,839.47
5. Step 5: Solve for x
   x = 2,804,839.47/1,871.69
6. Step 6: Final answer
   x = 1,498.56