Step 1: Identify the number of decimal places

The decimal 1.000861 has 6 decimal places.

Step 2: Multiply by the appropriate power of 10

Multiply by 10⁶ = 1000000 to eliminate the decimal point.

1.000861 × 1000000 = 1000861

Step 3: Write as a fraction

Step 4: Simplify the fraction

Find the greatest common divisor (GCD) of 1000861 and 1000000.

GCD(1000861, 1000000) = 1

Divide both the numerator and denominator by the GCD: