Finding the Fourth Proportional to 841,445.82, 1,261,233.79 and 641,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   841,445.82 : 1,261,233.79 = 641,105.69 : x
2. Step 2: Convert to fraction form
   841,445.82/1,261,233.79 = 641,105.69/x
3. Step 3: Cross multiply
   841,445.82x = 1,261,233.79 × 641,105.69
4. Step 4: Simplify right side
   841,445.82x = 808,584,151,280.33
5. Step 5: Solve for x
   x = 808,584,151,280.33/841,445.82
6. Step 6: Final answer
   x = 960,946.19