Finding the Fourth Proportional to 1,871.35, 2,582.45 and 1,086.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.35 : 2,582.45 = 1,086.05 : x
2. Step 2: Convert to fraction form
   1,871.35/2,582.45 = 1,086.05/x
3. Step 3: Cross multiply
   1,871.35x = 2,582.45 × 1,086.05
4. Step 4: Simplify right side
   1,871.35x = 2,804,678.99
5. Step 5: Solve for x
   x = 2,804,678.99/1,871.35
6. Step 6: Final answer
   x = 1,498.75