Finding the Fourth Proportional to 2,597.72, 3,898.55 and 1,906.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,597.72 : 3,898.55 = 1,906.14 : x
2. Step 2: Convert to fraction form
   2,597.72/3,898.55 = 1,906.14/x
3. Step 3: Cross multiply
   2,597.72x = 3,898.55 × 1,906.14
4. Step 4: Simplify right side
   2,597.72x = 7,431,182.10
5. Step 5: Solve for x
   x = 7,431,182.10/2,597.72
6. Step 6: Final answer
   x = 2,860.66