Finding the Fourth Proportional to 1,100.76, 1,519.26 and 708.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.76 : 1,519.26 = 708.28 : x
2. Step 2: Convert to fraction form
   1,100.76/1,519.26 = 708.28/x
3. Step 3: Cross multiply
   1,100.76x = 1,519.26 × 708.28
4. Step 4: Simplify right side
   1,100.76x = 1,076,061.47
5. Step 5: Solve for x
   x = 1,076,061.47/1,100.76
6. Step 6: Final answer
   x = 977.56