Finding the Fourth Proportional to 3,686.34, 5,516.82 and 2,280.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.34 : 5,516.82 = 2,280.18 : x
2. Step 2: Convert to fraction form
   3,686.34/5,516.82 = 2,280.18/x
3. Step 3: Cross multiply
   3,686.34x = 5,516.82 × 2,280.18
4. Step 4: Simplify right side
   3,686.34x = 12,579,342.63
5. Step 5: Solve for x
   x = 12,579,342.63/3,686.34
6. Step 6: Final answer
   x = 3,412.42