Finding the Fourth Proportional to 1,297.52, 1,790.56 and 708.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.52 : 1,790.56 = 708.05 : x
2. Step 2: Convert to fraction form
   1,297.52/1,790.56 = 708.05/x
3. Step 3: Cross multiply
   1,297.52x = 1,790.56 × 708.05
4. Step 4: Simplify right side
   1,297.52x = 1,267,806.01
5. Step 5: Solve for x
   x = 1,267,806.01/1,297.52
6. Step 6: Final answer
   x = 977.10