Finding the Fourth Proportional to 1,181,287, 1,630,331.52 and 665,141.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181,287 : 1,630,331.52 = 665,141.48 : x
2. Step 2: Convert to fraction form
   1,181,287/1,630,331.52 = 665,141.48/x
3. Step 3: Cross multiply
   1,181,287x = 1,630,331.52 × 665,141.48
4. Step 4: Simplify right side
   1,181,287x = 1,084,401,120,103.45
5. Step 5: Solve for x
   x = 1,084,401,120,103.45/1,181,287
6. Step 6: Final answer
   x = 917,982.78