Finding the Fourth Proportional to 540,215.88, 745,504.56 and 298,496.34

Step by Step Solution

1. Step 1: Write the proportion equation
   540,215.88 : 745,504.56 = 298,496.34 : x
2. Step 2: Convert to fraction form
   540,215.88/745,504.56 = 298,496.34/x
3. Step 3: Cross multiply
   540,215.88x = 745,504.56 × 298,496.34
4. Step 4: Simplify right side
   540,215.88x = 222,530,382,613.31
5. Step 5: Solve for x
   x = 222,530,382,613.31/540,215.88
6. Step 6: Final answer
   x = 411,928.62