Finding the Fourth Proportional to 2,166.32, 2,988.83 and 1,281.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.32 : 2,988.83 = 1,281.95 : x
2. Step 2: Convert to fraction form
   2,166.32/2,988.83 = 1,281.95/x
3. Step 3: Cross multiply
   2,166.32x = 2,988.83 × 1,281.95
4. Step 4: Simplify right side
   2,166.32x = 3,831,546.90
5. Step 5: Solve for x
   x = 3,831,546.90/2,166.32
6. Step 6: Final answer
   x = 1,768.69