Finding the Fourth Proportional to 1,452.63, 2,003.86 and 920.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.63 : 2,003.86 = 920.57 : x
2. Step 2: Convert to fraction form
   1,452.63/2,003.86 = 920.57/x
3. Step 3: Cross multiply
   1,452.63x = 2,003.86 × 920.57
4. Step 4: Simplify right side
   1,452.63x = 1,844,693.40
5. Step 5: Solve for x
   x = 1,844,693.40/1,452.63
6. Step 6: Final answer
   x = 1,269.90