Finding the Fourth Proportional to 860,272, 1,187,175.36 and 483,440

Step by Step Solution

1. Step 1: Write the proportion equation
   860,272 : 1,187,175.36 = 483,440 : x
2. Step 2: Convert to fraction form
   860,272/1,187,175.36 = 483,440/x
3. Step 3: Cross multiply
   860,272x = 1,187,175.36 × 483,440
4. Step 4: Simplify right side
   860,272x = 573,928,056,038.40
5. Step 5: Solve for x
   x = 573,928,056,038.40/860,272
6. Step 6: Final answer
   x = 667,147.20