Finding the Fourth Proportional to 1,452.78, 2,003.56 and 1,172.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.78 : 2,003.56 = 1,172.94 : x
2. Step 2: Convert to fraction form
   1,452.78/2,003.56 = 1,172.94/x
3. Step 3: Cross multiply
   1,452.78x = 2,003.56 × 1,172.94
4. Step 4: Simplify right side
   1,452.78x = 2,350,055.67
5. Step 5: Solve for x
   x = 2,350,055.67/1,452.78
6. Step 6: Final answer
   x = 1,617.63