Finding the Fourth Proportional to 3,753.72, 5,630.61 and 1,288.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,753.72 : 5,630.61 = 1,288.48 : x
2. Step 2: Convert to fraction form
   3,753.72/5,630.61 = 1,288.48/x
3. Step 3: Cross multiply
   3,753.72x = 5,630.61 × 1,288.48
4. Step 4: Simplify right side
   3,753.72x = 7,254,928.37
5. Step 5: Solve for x
   x = 7,254,928.37/3,753.72
6. Step 6: Final answer
   x = 1,932.73