Finding the Fourth Proportional to 3,100.81, 4,651.94 and 1,020.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.81 : 4,651.94 = 1,020.82 : x
2. Step 2: Convert to fraction form
   3,100.81/4,651.94 = 1,020.82/x
3. Step 3: Cross multiply
   3,100.81x = 4,651.94 × 1,020.82
4. Step 4: Simplify right side
   3,100.81x = 4,748,793.39
5. Step 5: Solve for x
   x = 4,748,793.39/3,100.81
6. Step 6: Final answer
   x = 1,531.47