Finding the Fourth Proportional to 2,118.03, 3,177.34 and 885.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.03 : 3,177.34 = 885.16 : x
2. Step 2: Convert to fraction form
   2,118.03/3,177.34 = 885.16/x
3. Step 3: Cross multiply
   2,118.03x = 3,177.34 × 885.16
4. Step 4: Simplify right side
   2,118.03x = 2,812,454.27
5. Step 5: Solve for x
   x = 2,812,454.27/2,118.03
6. Step 6: Final answer
   x = 1,327.86