Finding the Fourth Proportional to 1,066.60, 1,471.31 and 682.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.60 : 1,471.31 = 682.61 : x
2. Step 2: Convert to fraction form
   1,066.60/1,471.31 = 682.61/x
3. Step 3: Cross multiply
   1,066.60x = 1,471.31 × 682.61
4. Step 4: Simplify right side
   1,066.60x = 1,004,331.18
5. Step 5: Solve for x
   x = 1,004,331.18/1,066.60
6. Step 6: Final answer
   x = 941.62