Finding the Fourth Proportional to 2,551.98, 3,826.16 and 1,317

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.98 : 3,826.16 = 1,317 : x
2. Step 2: Convert to fraction form
   2,551.98/3,826.16 = 1,317/x
3. Step 3: Cross multiply
   2,551.98x = 3,826.16 × 1,317
4. Step 4: Simplify right side
   2,551.98x = 5,039,052.72
5. Step 5: Solve for x
   x = 5,039,052.72/2,551.98
6. Step 6: Final answer
   x = 1,974.57