Finding the Fourth Proportional to 1,103.32, 1,651.69 and 712.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.32 : 1,651.69 = 712.56 : x
2. Step 2: Convert to fraction form
   1,103.32/1,651.69 = 712.56/x
3. Step 3: Cross multiply
   1,103.32x = 1,651.69 × 712.56
4. Step 4: Simplify right side
   1,103.32x = 1,176,935.31
5. Step 5: Solve for x
   x = 1,176,935.31/1,103.32
6. Step 6: Final answer
   x = 1,066.72