Finding the Fourth Proportional to 2,631.18, 3,631.82 and 1,569.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.18 : 3,631.82 = 1,569.72 : x
2. Step 2: Convert to fraction form
   2,631.18/3,631.82 = 1,569.72/x
3. Step 3: Cross multiply
   2,631.18x = 3,631.82 × 1,569.72
4. Step 4: Simplify right side
   2,631.18x = 5,700,940.49
5. Step 5: Solve for x
   x = 5,700,940.49/2,631.18
6. Step 6: Final answer
   x = 2,166.69