Finding the Fourth Proportional to 2,850.57, 4,275.72 and 1,002.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,850.57 : 4,275.72 = 1,002.09 : x
2. Step 2: Convert to fraction form
   2,850.57/4,275.72 = 1,002.09/x
3. Step 3: Cross multiply
   2,850.57x = 4,275.72 × 1,002.09
4. Step 4: Simplify right side
   2,850.57x = 4,284,656.25
5. Step 5: Solve for x
   x = 4,284,656.25/2,850.57
6. Step 6: Final answer
   x = 1,503.09