Finding the Fourth Proportional to 2,598.77, 3,897.74 and 867.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.77 : 3,897.74 = 867.39 : x
2. Step 2: Convert to fraction form
   2,598.77/3,897.74 = 867.39/x
3. Step 3: Cross multiply
   2,598.77x = 3,897.74 × 867.39
4. Step 4: Simplify right side
   2,598.77x = 3,380,856.36
5. Step 5: Solve for x
   x = 3,380,856.36/2,598.77
6. Step 6: Final answer
   x = 1,300.95