Finding the Fourth Proportional to 3,755.46, 5,631.25 and 1,289.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,755.46 : 5,631.25 = 1,289.61 : x
2. Step 2: Convert to fraction form
   3,755.46/5,631.25 = 1,289.61/x
3. Step 3: Cross multiply
   3,755.46x = 5,631.25 × 1,289.61
4. Step 4: Simplify right side
   3,755.46x = 7,262,116.31
5. Step 5: Solve for x
   x = 7,262,116.31/3,755.46
6. Step 6: Final answer
   x = 1,933.75