Finding the Fourth Proportional to 540,478.72, 745,848.72 and 298,752

Step by Step Solution

1. Step 1: Write the proportion equation
   540,478.72 : 745,848.72 = 298,752 : x
2. Step 2: Convert to fraction form
   540,478.72/745,848.72 = 298,752/x
3. Step 3: Cross multiply
   540,478.72x = 745,848.72 × 298,752
4. Step 4: Simplify right side
   540,478.72x = 222,823,796,797.44
5. Step 5: Solve for x
   x = 222,823,796,797.44/540,478.72
6. Step 6: Final answer
   x = 412,271.17