Finding the Fourth Proportional to 1,181,603.52, 1,630,604.52 and 645,059.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181,603.52 : 1,630,604.52 = 645,059.52 : x
2. Step 2: Convert to fraction form
   1,181,603.52/1,630,604.52 = 645,059.52/x
3. Step 3: Cross multiply
   1,181,603.52x = 1,630,604.52 × 645,059.52
4. Step 4: Simplify right side
   1,181,603.52x = 1,051,836,968,981.03
5. Step 5: Solve for x
   x = 1,051,836,968,981.03/1,181,603.52
6. Step 6: Final answer
   x = 890,177.59