Finding the Fourth Proportional to 1,871.28, 2,582.34 and 1,085.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.28 : 2,582.34 = 1,085.46 : x
2. Step 2: Convert to fraction form
   1,871.28/2,582.34 = 1,085.46/x
3. Step 3: Cross multiply
   1,871.28x = 2,582.34 × 1,085.46
4. Step 4: Simplify right side
   1,871.28x = 2,803,026.78
5. Step 5: Solve for x
   x = 2,803,026.78/1,871.28
6. Step 6: Final answer
   x = 1,497.92