Finding the Fourth Proportional to 1,269.72, 1,752.16 and 710.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269.72 : 1,752.16 = 710.16 : x
2. Step 2: Convert to fraction form
   1,269.72/1,752.16 = 710.16/x
3. Step 3: Cross multiply
   1,269.72x = 1,752.16 × 710.16
4. Step 4: Simplify right side
   1,269.72x = 1,244,313.95
5. Step 5: Solve for x
   x = 1,244,313.95/1,269.72
6. Step 6: Final answer
   x = 979.99