Finding the Fourth Proportional to 540,595.25, 745,982.15 and 298,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   540,595.25 : 745,982.15 = 298,880.72 : x
2. Step 2: Convert to fraction form
   540,595.25/745,982.15 = 298,880.72/x
3. Step 3: Cross multiply
   540,595.25x = 745,982.15 × 298,880.72
4. Step 4: Simplify right side
   540,595.25x = 222,959,676,874.83
5. Step 5: Solve for x
   x = 222,959,676,874.83/540,595.25
6. Step 6: Final answer
   x = 412,433.66