Finding the Fourth Proportional to 2,118.27, 3,175.86 and 886.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.27 : 3,175.86 = 886.03 : x
2. Step 2: Convert to fraction form
   2,118.27/3,175.86 = 886.03/x
3. Step 3: Cross multiply
   2,118.27x = 3,175.86 × 886.03
4. Step 4: Simplify right side
   2,118.27x = 2,813,899.30
5. Step 5: Solve for x
   x = 2,813,899.30/2,118.27
6. Step 6: Final answer
   x = 1,328.40