Finding the Fourth Proportional to 1,433.39, 2,150.21 and 508.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.39 : 2,150.21 = 508.72 : x
2. Step 2: Convert to fraction form
   1,433.39/2,150.21 = 508.72/x
3. Step 3: Cross multiply
   1,433.39x = 2,150.21 × 508.72
4. Step 4: Simplify right side
   1,433.39x = 1,093,854.83
5. Step 5: Solve for x
   x = 1,093,854.83/1,433.39
6. Step 6: Final answer
   x = 763.12