Finding the Fourth Proportional to 2,353.47, 3,527.91 and 1,120.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.47 : 3,527.91 = 1,120.55 : x
2. Step 2: Convert to fraction form
   2,353.47/3,527.91 = 1,120.55/x
3. Step 3: Cross multiply
   2,353.47x = 3,527.91 × 1,120.55
4. Step 4: Simplify right side
   2,353.47x = 3,953,208.37
5. Step 5: Solve for x
   x = 3,953,208.37/2,353.47
6. Step 6: Final answer
   x = 1,679.74