Finding the Fourth Proportional to 2,566.96, 3,847.72 and 1,087

Step by Step Solution

1. Step 1: Write the proportion equation
   2,566.96 : 3,847.72 = 1,087 : x
2. Step 2: Convert to fraction form
   2,566.96/3,847.72 = 1,087/x
3. Step 3: Cross multiply
   2,566.96x = 3,847.72 × 1,087
4. Step 4: Simplify right side
   2,566.96x = 4,182,471.64
5. Step 5: Solve for x
   x = 4,182,471.64/2,566.96
6. Step 6: Final answer
   x = 1,629.35