Finding the Fourth Proportional to 1,872.25, 2,583.71 and 1,086.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.25 : 2,583.71 = 1,086.31 : x
2. Step 2: Convert to fraction form
   1,872.25/2,583.71 = 1,086.31/x
3. Step 3: Cross multiply
   1,872.25x = 2,583.71 × 1,086.31
4. Step 4: Simplify right side
   1,872.25x = 2,806,710.01
5. Step 5: Solve for x
   x = 2,806,710.01/1,872.25
6. Step 6: Final answer
   x = 1,499.11