Finding the Fourth Proportional to 2,739.48, 3,755.82 and 2,690.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.48 : 3,755.82 = 2,690.34 : x
2. Step 2: Convert to fraction form
   2,739.48/3,755.82 = 2,690.34/x
3. Step 3: Cross multiply
   2,739.48x = 3,755.82 × 2,690.34
4. Step 4: Simplify right side
   2,739.48x = 10,104,432.78
5. Step 5: Solve for x
   x = 10,104,432.78/2,739.48
6. Step 6: Final answer
   x = 3,688.45