Finding the Fourth Proportional to 3,100.89, 4,651.80 and 1,020.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.89 : 4,651.80 = 1,020.18 : x
2. Step 2: Convert to fraction form
   3,100.89/4,651.80 = 1,020.18/x
3. Step 3: Cross multiply
   3,100.89x = 4,651.80 × 1,020.18
4. Step 4: Simplify right side
   3,100.89x = 4,745,673.32
5. Step 5: Solve for x
   x = 4,745,673.32/3,100.89
6. Step 6: Final answer
   x = 1,530.42