Finding the Fourth Proportional to 2,597.40, 3,897.32 and 1,299.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,597.40 : 3,897.32 = 1,299.78 : x
2. Step 2: Convert to fraction form
   2,597.40/3,897.32 = 1,299.78/x
3. Step 3: Cross multiply
   2,597.40x = 3,897.32 × 1,299.78
4. Step 4: Simplify right side
   2,597.40x = 5,065,652.09
5. Step 5: Solve for x
   x = 5,065,652.09/2,597.40
6. Step 6: Final answer
   x = 1,950.28