Finding the Fourth Proportional to 2,118.01, 3,177.82 and 885.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.01 : 3,177.82 = 885.32 : x
2. Step 2: Convert to fraction form
   2,118.01/3,177.82 = 885.32/x
3. Step 3: Cross multiply
   2,118.01x = 3,177.82 × 885.32
4. Step 4: Simplify right side
   2,118.01x = 2,813,387.60
5. Step 5: Solve for x
   x = 2,813,387.60/2,118.01
6. Step 6: Final answer
   x = 1,328.32