Finding the Fourth Proportional to 2,731.34, 3,768.72 and 1,890.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,731.34 : 3,768.72 = 1,890.68 : x
2. Step 2: Convert to fraction form
   2,731.34/3,768.72 = 1,890.68/x
3. Step 3: Cross multiply
   2,731.34x = 3,768.72 × 1,890.68
4. Step 4: Simplify right side
   2,731.34x = 7,125,443.53
5. Step 5: Solve for x
   x = 7,125,443.53/2,731.34
6. Step 6: Final answer
   x = 2,608.77