Finding the Fourth Proportional to 2,076.72, 2,867.32 and 1,291.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.72 : 2,867.32 = 1,291.12 : x
2. Step 2: Convert to fraction form
   2,076.72/2,867.32 = 1,291.12/x
3. Step 3: Cross multiply
   2,076.72x = 2,867.32 × 1,291.12
4. Step 4: Simplify right side
   2,076.72x = 3,702,054.20
5. Step 5: Solve for x
   x = 3,702,054.20/2,076.72
6. Step 6: Final answer
   x = 1,782.64