Finding the Fourth Proportional to 1,061.64, 1,465.56 and 712.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.64 : 1,465.56 = 712.56 : x
2. Step 2: Convert to fraction form
   1,061.64/1,465.56 = 712.56/x
3. Step 3: Cross multiply
   1,061.64x = 1,465.56 × 712.56
4. Step 4: Simplify right side
   1,061.64x = 1,044,299.43
5. Step 5: Solve for x
   x = 1,044,299.43/1,061.64
6. Step 6: Final answer
   x = 983.67