Finding the Fourth Proportional to 1,152.87, 1,729.25 and 503.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.87 : 1,729.25 = 503.61 : x
2. Step 2: Convert to fraction form
   1,152.87/1,729.25 = 503.61/x
3. Step 3: Cross multiply
   1,152.87x = 1,729.25 × 503.61
4. Step 4: Simplify right side
   1,152.87x = 870,856.43
5. Step 5: Solve for x
   x = 870,856.43/1,152.87
6. Step 6: Final answer
   x = 755.38