Finding the Fourth Proportional to 1,641.71, 2,265.84 and 1,567.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.71 : 2,265.84 = 1,567.89 : x
2. Step 2: Convert to fraction form
   1,641.71/2,265.84 = 1,567.89/x
3. Step 3: Cross multiply
   1,641.71x = 2,265.84 × 1,567.89
4. Step 4: Simplify right side
   1,641.71x = 3,552,587.88
5. Step 5: Solve for x
   x = 3,552,587.88/1,641.71
6. Step 6: Final answer
   x = 2,163.96