Finding the Fourth Proportional to 3,627.38, 5,441.78 and 1,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,627.38 : 5,441.78 = 1,287.50 : x
2. Step 2: Convert to fraction form
   3,627.38/5,441.78 = 1,287.50/x
3. Step 3: Cross multiply
   3,627.38x = 5,441.78 × 1,287.50
4. Step 4: Simplify right side
   3,627.38x = 7,006,267.76
5. Step 5: Solve for x
   x = 7,006,267.76/3,627.38
6. Step 6: Final answer
   x = 1,931.49