Finding the Fourth Proportional to 1,859.83, 2,773.12 and 1,808.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.83 : 2,773.12 = 1,808.80 : x
2. Step 2: Convert to fraction form
   1,859.83/2,773.12 = 1,808.80/x
3. Step 3: Cross multiply
   1,859.83x = 2,773.12 × 1,808.80
4. Step 4: Simplify right side
   1,859.83x = 5,016,019.46
5. Step 5: Solve for x
   x = 5,016,019.46/1,859.83
6. Step 6: Final answer
   x = 2,697.03