Finding the Fourth Proportional to 1,101.14, 1,518.72 and 708.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.14 : 1,518.72 = 708.20 : x
2. Step 2: Convert to fraction form
   1,101.14/1,518.72 = 708.20/x
3. Step 3: Cross multiply
   1,101.14x = 1,518.72 × 708.20
4. Step 4: Simplify right side
   1,101.14x = 1,075,557.50
5. Step 5: Solve for x
   x = 1,075,557.50/1,101.14
6. Step 6: Final answer
   x = 976.77