Finding the Fourth Proportional to 739,960.20, 1,109,490.83 and 290,142.15

Step by Step Solution

1. Step 1: Write the proportion equation
   739,960.20 : 1,109,490.83 = 290,142.15 : x
2. Step 2: Convert to fraction form
   739,960.20/1,109,490.83 = 290,142.15/x
3. Step 3: Cross multiply
   739,960.20x = 1,109,490.83 × 290,142.15
4. Step 4: Simplify right side
   739,960.20x = 321,910,054,821.49
5. Step 5: Solve for x
   x = 321,910,054,821.49/739,960.20
6. Step 6: Final answer
   x = 435,036.99