Finding the Fourth Proportional to 1,062.30, 1,466.58 and 708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.30 : 1,466.58 = 708.72 : x
2. Step 2: Convert to fraction form
   1,062.30/1,466.58 = 708.72/x
3. Step 3: Cross multiply
   1,062.30x = 1,466.58 × 708.72
4. Step 4: Simplify right side
   1,062.30x = 1,039,394.58
5. Step 5: Solve for x
   x = 1,039,394.58/1,062.30
6. Step 6: Final answer
   x = 978.44