Finding the Fourth Proportional to 851,128, 1,174,564.56 and 469,168.45

Step by Step Solution

1. Step 1: Write the proportion equation
   851,128 : 1,174,564.56 = 469,168.45 : x
2. Step 2: Convert to fraction form
   851,128/1,174,564.56 = 469,168.45/x
3. Step 3: Cross multiply
   851,128x = 1,174,564.56 × 469,168.45
4. Step 4: Simplify right side
   851,128x = 551,068,634,040.13
5. Step 5: Solve for x
   x = 551,068,634,040.13/851,128
6. Step 6: Final answer
   x = 647,456.83