Finding the Fourth Proportional to 2,196.55, 3,286.75 and 2,077.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.55 : 3,286.75 = 2,077.81 : x
2. Step 2: Convert to fraction form
   2,196.55/3,286.75 = 2,077.81/x
3. Step 3: Cross multiply
   2,196.55x = 3,286.75 × 2,077.81
4. Step 4: Simplify right side
   2,196.55x = 6,829,242.02
5. Step 5: Solve for x
   x = 6,829,242.02/2,196.55
6. Step 6: Final answer
   x = 3,109.08