Finding the Fourth Proportional to 641,026.24, 884,556.72 and 354,540.17

Step by Step Solution

1. Step 1: Write the proportion equation
   641,026.24 : 884,556.72 = 354,540.17 : x
2. Step 2: Convert to fraction form
   641,026.24/884,556.72 = 354,540.17/x
3. Step 3: Cross multiply
   641,026.24x = 884,556.72 × 354,540.17
4. Step 4: Simplify right side
   641,026.24x = 313,610,892,094.83
5. Step 5: Solve for x
   x = 313,610,892,094.83/641,026.24
6. Step 6: Final answer
   x = 489,232.54