Finding the Fourth Proportional to 1,020.71, 1,530.71 and 955.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020.71 : 1,530.71 = 955.10 : x
2. Step 2: Convert to fraction form
   1,020.71/1,530.71 = 955.10/x
3. Step 3: Cross multiply
   1,020.71x = 1,530.71 × 955.10
4. Step 4: Simplify right side
   1,020.71x = 1,461,981.12
5. Step 5: Solve for x
   x = 1,461,981.12/1,020.71
6. Step 6: Final answer
   x = 1,432.32