Finding the Fourth Proportional to 1,048.15, 1,446.56 and 716.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.15 : 1,446.56 = 716.32 : x
2. Step 2: Convert to fraction form
   1,048.15/1,446.56 = 716.32/x
3. Step 3: Cross multiply
   1,048.15x = 1,446.56 × 716.32
4. Step 4: Simplify right side
   1,048.15x = 1,036,199.86
5. Step 5: Solve for x
   x = 1,036,199.86/1,048.15
6. Step 6: Final answer
   x = 988.60