Finding the Fourth Proportional to 860,667.05, 1,187,053.28 and 554,793.23

Step by Step Solution

1. Step 1: Write the proportion equation
   860,667.05 : 1,187,053.28 = 554,793.23 : x
2. Step 2: Convert to fraction form
   860,667.05/1,187,053.28 = 554,793.23/x
3. Step 3: Cross multiply
   860,667.05x = 1,187,053.28 × 554,793.23
4. Step 4: Simplify right side
   860,667.05x = 658,569,125,667.44
5. Step 5: Solve for x
   x = 658,569,125,667.44/860,667.05
6. Step 6: Final answer
   x = 765,184.54