Finding the Fourth Proportional to 810,061.25, 1,117,788.71 and 447,463.35

Step by Step Solution

1. Step 1: Write the proportion equation
   810,061.25 : 1,117,788.71 = 447,463.35 : x
2. Step 2: Convert to fraction form
   810,061.25/1,117,788.71 = 447,463.35/x
3. Step 3: Cross multiply
   810,061.25x = 1,117,788.71 × 447,463.35
4. Step 4: Simplify right side
   810,061.25x = 500,169,478,531.46
5. Step 5: Solve for x
   x = 500,169,478,531.46/810,061.25
6. Step 6: Final answer
   x = 617,446.50