Finding the Fourth Proportional to 1,433.62, 2,152.25 and 1,218.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.62 : 2,152.25 = 1,218.57 : x
2. Step 2: Convert to fraction form
   1,433.62/2,152.25 = 1,218.57/x
3. Step 3: Cross multiply
   1,433.62x = 2,152.25 × 1,218.57
4. Step 4: Simplify right side
   1,433.62x = 2,622,667.28
5. Step 5: Solve for x
   x = 2,622,667.28/1,433.62
6. Step 6: Final answer
   x = 1,829.40