Finding the Fourth Proportional to 545,086.56, 751,792.68 and 354,162

Step by Step Solution

1. Step 1: Write the proportion equation
   545,086.56 : 751,792.68 = 354,162 : x
2. Step 2: Convert to fraction form
   545,086.56/751,792.68 = 354,162/x
3. Step 3: Cross multiply
   545,086.56x = 751,792.68 × 354,162
4. Step 4: Simplify right side
   545,086.56x = 266,256,399,134.16
5. Step 5: Solve for x
   x = 266,256,399,134.16/545,086.56
6. Step 6: Final answer
   x = 488,466.27