Finding the Fourth Proportional to 3,669.57, 5,500.71 and 1,817.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.57 : 5,500.71 = 1,817.91 : x
2. Step 2: Convert to fraction form
   3,669.57/5,500.71 = 1,817.91/x
3. Step 3: Cross multiply
   3,669.57x = 5,500.71 × 1,817.91
4. Step 4: Simplify right side
   3,669.57x = 9,999,795.72
5. Step 5: Solve for x
   x = 9,999,795.72/3,669.57
6. Step 6: Final answer
   x = 2,725.06