Finding the Fourth Proportional to 853,492.86, 1,280,429.98 and 321,018.52

Step by Step Solution

1. Step 1: Write the proportion equation
   853,492.86 : 1,280,429.98 = 321,018.52 : x
2. Step 2: Convert to fraction form
   853,492.86/1,280,429.98 = 321,018.52/x
3. Step 3: Cross multiply
   853,492.86x = 1,280,429.98 × 321,018.52
4. Step 4: Simplify right side
   853,492.86x = 411,041,737,143.23
5. Step 5: Solve for x
   x = 411,041,737,143.23/853,492.86
6. Step 6: Final answer
   x = 481,599.50