Finding the Fourth Proportional to 2,664.34, 3,996.69 and 1,277.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.34 : 3,996.69 = 1,277.98 : x
2. Step 2: Convert to fraction form
   2,664.34/3,996.69 = 1,277.98/x
3. Step 3: Cross multiply
   2,664.34x = 3,996.69 × 1,277.98
4. Step 4: Simplify right side
   2,664.34x = 5,107,689.89
5. Step 5: Solve for x
   x = 5,107,689.89/2,664.34
6. Step 6: Final answer
   x = 1,917.06