Finding the Fourth Proportional to 1,172.58, 1,756.76 and 1,103.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.58 : 1,756.76 = 1,103.18 : x
2. Step 2: Convert to fraction form
   1,172.58/1,756.76 = 1,103.18/x
3. Step 3: Cross multiply
   1,172.58x = 1,756.76 × 1,103.18
4. Step 4: Simplify right side
   1,172.58x = 1,938,022.50
5. Step 5: Solve for x
   x = 1,938,022.50/1,172.58
6. Step 6: Final answer
   x = 1,652.78