Finding the Fourth Proportional to 1,066.82, 1,471.37 and 624.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.82 : 1,471.37 = 624.56 : x
2. Step 2: Convert to fraction form
   1,066.82/1,471.37 = 624.56/x
3. Step 3: Cross multiply
   1,066.82x = 1,471.37 × 624.56
4. Step 4: Simplify right side
   1,066.82x = 918,948.37
5. Step 5: Solve for x
   x = 918,948.37/1,066.82
6. Step 6: Final answer
   x = 861.39