Finding the Fourth Proportional to 479,741, 662,100.90 and 278,537

Step by Step Solution

1. Step 1: Write the proportion equation
   479,741 : 662,100.90 = 278,537 : x
2. Step 2: Convert to fraction form
   479,741/662,100.90 = 278,537/x
3. Step 3: Cross multiply
   479,741x = 662,100.90 × 278,537
4. Step 4: Simplify right side
   479,741x = 184,419,598,383.30
5. Step 5: Solve for x
   x = 184,419,598,383.30/479,741
6. Step 6: Final answer
   x = 384,414.92