Finding the Fourth Proportional to 830,429.29, 1,145,992.41 and 448,456.04

Step by Step Solution

1. Step 1: Write the proportion equation
   830,429.29 : 1,145,992.41 = 448,456.04 : x
2. Step 2: Convert to fraction form
   830,429.29/1,145,992.41 = 448,456.04/x
3. Step 3: Cross multiply
   830,429.29x = 1,145,992.41 × 448,456.04
4. Step 4: Simplify right side
   830,429.29x = 513,927,212,328.69
5. Step 5: Solve for x
   x = 513,927,212,328.69/830,429.29
6. Step 6: Final answer
   x = 618,869.32