Finding the Fourth Proportional to 2,657.84, 3,986.81 and 1,271.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.84 : 3,986.81 = 1,271.32 : x
2. Step 2: Convert to fraction form
   2,657.84/3,986.81 = 1,271.32/x
3. Step 3: Cross multiply
   2,657.84x = 3,986.81 × 1,271.32
4. Step 4: Simplify right side
   2,657.84x = 5,068,499.73
5. Step 5: Solve for x
   x = 5,068,499.73/2,657.84
6. Step 6: Final answer
   x = 1,907.00