Finding the Fourth Proportional to 2,677.58, 4,014.38 and 1,289.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,677.58 : 4,014.38 = 1,289.61 : x
2. Step 2: Convert to fraction form
   2,677.58/4,014.38 = 1,289.61/x
3. Step 3: Cross multiply
   2,677.58x = 4,014.38 × 1,289.61
4. Step 4: Simplify right side
   2,677.58x = 5,176,978.14
5. Step 5: Solve for x
   x = 5,176,978.14/2,677.58
6. Step 6: Final answer
   x = 1,933.46