Finding the Fourth Proportional to 1,269.52, 1,751.69 and 709.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269.52 : 1,751.69 = 709.91 : x
2. Step 2: Convert to fraction form
   1,269.52/1,751.69 = 709.91/x
3. Step 3: Cross multiply
   1,269.52x = 1,751.69 × 709.91
4. Step 4: Simplify right side
   1,269.52x = 1,243,541.83
5. Step 5: Solve for x
   x = 1,243,541.83/1,269.52
6. Step 6: Final answer
   x = 979.54