Finding the Fourth Proportional to 1,066.24, 1,478.23 and 1,010.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.24 : 1,478.23 = 1,010.86 : x
2. Step 2: Convert to fraction form
   1,066.24/1,478.23 = 1,010.86/x
3. Step 3: Cross multiply
   1,066.24x = 1,478.23 × 1,010.86
4. Step 4: Simplify right side
   1,066.24x = 1,494,283.58
5. Step 5: Solve for x
   x = 1,494,283.58/1,066.24
6. Step 6: Final answer
   x = 1,401.45