Finding the Fourth Proportional to 2,067.52, 3,102.72 and 912.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.52 : 3,102.72 = 912.64 : x
2. Step 2: Convert to fraction form
   2,067.52/3,102.72 = 912.64/x
3. Step 3: Cross multiply
   2,067.52x = 3,102.72 × 912.64
4. Step 4: Simplify right side
   2,067.52x = 2,831,666.38
5. Step 5: Solve for x
   x = 2,831,666.38/2,067.52
6. Step 6: Final answer
   x = 1,369.60