Finding the Fourth Proportional to 978,499.98, 1,350,339.39 and 548,770.95

Step by Step Solution

1. Step 1: Write the proportion equation
   978,499.98 : 1,350,339.39 = 548,770.95 : x
2. Step 2: Convert to fraction form
   978,499.98/1,350,339.39 = 548,770.95/x
3. Step 3: Cross multiply
   978,499.98x = 1,350,339.39 × 548,770.95
4. Step 4: Simplify right side
   978,499.98x = 741,027,029,872.72
5. Step 5: Solve for x
   x = 741,027,029,872.72/978,499.98
6. Step 6: Final answer
   x = 757,309.19