Finding the Fourth Proportional to 1,871.67, 2,582.55 and 1,163.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.67 : 2,582.55 = 1,163.72 : x
2. Step 2: Convert to fraction form
   1,871.67/2,582.55 = 1,163.72/x
3. Step 3: Cross multiply
   1,871.67x = 2,582.55 × 1,163.72
4. Step 4: Simplify right side
   1,871.67x = 3,005,352.17
5. Step 5: Solve for x
   x = 3,005,352.17/1,871.67
6. Step 6: Final answer
   x = 1,605.71