Finding the Fourth Proportional to 1,040.42, 1,436.33 and 708.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.42 : 1,436.33 = 708.32 : x
2. Step 2: Convert to fraction form
   1,040.42/1,436.33 = 708.32/x
3. Step 3: Cross multiply
   1,040.42x = 1,436.33 × 708.32
4. Step 4: Simplify right side
   1,040.42x = 1,017,381.27
5. Step 5: Solve for x
   x = 1,017,381.27/1,040.42
6. Step 6: Final answer
   x = 977.86