Finding the Fourth Proportional to 1,126,054.52, 1,553,980.42 and 642,610.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126,054.52 : 1,553,980.42 = 642,610.04 : x
2. Step 2: Convert to fraction form
   1,126,054.52/1,553,980.42 = 642,610.04/x
3. Step 3: Cross multiply
   1,126,054.52x = 1,553,980.42 × 642,610.04
4. Step 4: Simplify right side
   1,126,054.52x = 998,603,419,855.42
5. Step 5: Solve for x
   x = 998,603,419,855.42/1,126,054.52
6. Step 6: Final answer
   x = 886,816.23