Finding the Fourth Proportional to 1,100.60, 1,519.28 and 708.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.60 : 1,519.28 = 708.12 : x
2. Step 2: Convert to fraction form
   1,100.60/1,519.28 = 708.12/x
3. Step 3: Cross multiply
   1,100.60x = 1,519.28 × 708.12
4. Step 4: Simplify right side
   1,100.60x = 1,075,832.55
5. Step 5: Solve for x
   x = 1,075,832.55/1,100.60
6. Step 6: Final answer
   x = 977.50