Finding the Fourth Proportional to 1,185,000, 1,635,300 and 648,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185,000 : 1,635,300 = 648,456 : x
2. Step 2: Convert to fraction form
   1,185,000/1,635,300 = 648,456/x
3. Step 3: Cross multiply
   1,185,000x = 1,635,300 × 648,456
4. Step 4: Simplify right side
   1,185,000x = 1,060,420,096,800
5. Step 5: Solve for x
   x = 1,060,420,096,800/1,185,000
6. Step 6: Final answer
   x = 894,869.28