Finding the Fourth Proportional to 1,065.42, 1,462.39 and 1,020.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.42 : 1,462.39 = 1,020.33 : x
2. Step 2: Convert to fraction form
   1,065.42/1,462.39 = 1,020.33/x
3. Step 3: Cross multiply
   1,065.42x = 1,462.39 × 1,020.33
4. Step 4: Simplify right side
   1,065.42x = 1,492,117.84
5. Step 5: Solve for x
   x = 1,492,117.84/1,065.42
6. Step 6: Final answer
   x = 1,400.50