Finding the Fourth Proportional to 2,166.76, 2,990.82 and 1,838.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.76 : 2,990.82 = 1,838.44 : x
2. Step 2: Convert to fraction form
   2,166.76/2,990.82 = 1,838.44/x
3. Step 3: Cross multiply
   2,166.76x = 2,990.82 × 1,838.44
4. Step 4: Simplify right side
   2,166.76x = 5,498,443.12
5. Step 5: Solve for x
   x = 5,498,443.12/2,166.76
6. Step 6: Final answer
   x = 2,537.63