Finding the Fourth Proportional to 2,167.89, 2,989.84 and 1,411.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.89 : 2,989.84 = 1,411.86 : x
2. Step 2: Convert to fraction form
   2,167.89/2,989.84 = 1,411.86/x
3. Step 3: Cross multiply
   2,167.89x = 2,989.84 × 1,411.86
4. Step 4: Simplify right side
   2,167.89x = 4,221,235.50
5. Step 5: Solve for x
   x = 4,221,235.50/2,167.89
6. Step 6: Final answer
   x = 1,947.16