Finding the Fourth Proportional to 1,633.80, 2,452.31 and 1,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,633.80 : 2,452.31 = 1,172.10 : x
2. Step 2: Convert to fraction form
   1,633.80/2,452.31 = 1,172.10/x
3. Step 3: Cross multiply
   1,633.80x = 2,452.31 × 1,172.10
4. Step 4: Simplify right side
   1,633.80x = 2,874,352.55
5. Step 5: Solve for x
   x = 2,874,352.55/1,633.80
6. Step 6: Final answer
   x = 1,759.31