Finding the Fourth Proportional to 3,498.16, 5,245.57 and 1,275.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.16 : 5,245.57 = 1,275.42 : x
2. Step 2: Convert to fraction form
   3,498.16/5,245.57 = 1,275.42/x
3. Step 3: Cross multiply
   3,498.16x = 5,245.57 × 1,275.42
4. Step 4: Simplify right side
   3,498.16x = 6,690,304.89
5. Step 5: Solve for x
   x = 6,690,304.89/3,498.16
6. Step 6: Final answer
   x = 1,912.52