Finding the Fourth Proportional to 3,196.55, 4,801.80 and 2,278.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.55 : 4,801.80 = 2,278.01 : x
2. Step 2: Convert to fraction form
   3,196.55/4,801.80 = 2,278.01/x
3. Step 3: Cross multiply
   3,196.55x = 4,801.80 × 2,278.01
4. Step 4: Simplify right side
   3,196.55x = 10,938,530.10
5. Step 5: Solve for x
   x = 10,938,530.10/3,196.55
6. Step 6: Final answer
   x = 3,421.99