Finding the Fourth Proportional to 3,754.59, 5,630.49 and 1,288.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,754.59 : 5,630.49 = 1,288.71 : x
2. Step 2: Convert to fraction form
   3,754.59/5,630.49 = 1,288.71/x
3. Step 3: Cross multiply
   3,754.59x = 5,630.49 × 1,288.71
4. Step 4: Simplify right side
   3,754.59x = 7,256,062.32
5. Step 5: Solve for x
   x = 7,256,062.32/3,754.59
6. Step 6: Final answer
   x = 1,932.58