Finding the Fourth Proportional to 1,065.82, 1,598.98 and 416.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.82 : 1,598.98 = 416.56 : x
2. Step 2: Convert to fraction form
   1,065.82/1,598.98 = 416.56/x
3. Step 3: Cross multiply
   1,065.82x = 1,598.98 × 416.56
4. Step 4: Simplify right side
   1,065.82x = 666,071.11
5. Step 5: Solve for x
   x = 666,071.11/1,065.82
6. Step 6: Final answer
   x = 624.94