Finding the Fourth Proportional to 1,441.69, 2,160.99 and 620.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.69 : 2,160.99 = 620.03 : x
2. Step 2: Convert to fraction form
   1,441.69/2,160.99 = 620.03/x
3. Step 3: Cross multiply
   1,441.69x = 2,160.99 × 620.03
4. Step 4: Simplify right side
   1,441.69x = 1,339,870.15
5. Step 5: Solve for x
   x = 1,339,870.15/1,441.69
6. Step 6: Final answer
   x = 929.38