Finding the Fourth Proportional to 3,685.72, 5,530.86 and 1,955.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.72 : 5,530.86 = 1,955.56 : x
2. Step 2: Convert to fraction form
   3,685.72/5,530.86 = 1,955.56/x
3. Step 3: Cross multiply
   3,685.72x = 5,530.86 × 1,955.56
4. Step 4: Simplify right side
   3,685.72x = 10,815,928.58
5. Step 5: Solve for x
   x = 10,815,928.58/3,685.72
6. Step 6: Final answer
   x = 2,934.55