Finding the Fourth Proportional to 842,116.72, 1,260,911.54 and 641,481.34

Step by Step Solution

1. Step 1: Write the proportion equation
   842,116.72 : 1,260,911.54 = 641,481.34 : x
2. Step 2: Convert to fraction form
   842,116.72/1,260,911.54 = 641,481.34/x
3. Step 3: Cross multiply
   842,116.72x = 1,260,911.54 × 641,481.34
4. Step 4: Simplify right side
   842,116.72x = 808,851,224,300.66
5. Step 5: Solve for x
   x = 808,851,224,300.66/842,116.72
6. Step 6: Final answer
   x = 960,497.76