Finding the Fourth Proportional to 1,269.98, 1,752.56 and 710.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269.98 : 1,752.56 = 710.45 : x
2. Step 2: Convert to fraction form
   1,269.98/1,752.56 = 710.45/x
3. Step 3: Cross multiply
   1,269.98x = 1,752.56 × 710.45
4. Step 4: Simplify right side
   1,269.98x = 1,245,106.25
5. Step 5: Solve for x
   x = 1,245,106.25/1,269.98
6. Step 6: Final answer
   x = 980.41