Finding the Fourth Proportional to 3,667.58, 5,501.98 and 1,818.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.58 : 5,501.98 = 1,818.78 : x
2. Step 2: Convert to fraction form
   3,667.58/5,501.98 = 1,818.78/x
3. Step 3: Cross multiply
   3,667.58x = 5,501.98 × 1,818.78
4. Step 4: Simplify right side
   3,667.58x = 10,006,891.18
5. Step 5: Solve for x
   x = 10,006,891.18/3,667.58
6. Step 6: Final answer
   x = 2,728.47