Finding the Fourth Proportional to 1,132,649.93, 1,562,705.06 and 642,538.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132,649.93 : 1,562,705.06 = 642,538.78 : x
2. Step 2: Convert to fraction form
   1,132,649.93/1,562,705.06 = 642,538.78/x
3. Step 3: Cross multiply
   1,132,649.93x = 1,562,705.06 × 642,538.78
4. Step 4: Simplify right side
   1,132,649.93x = 1,004,098,595,632.77
5. Step 5: Solve for x
   x = 1,004,098,595,632.77/1,132,649.93
6. Step 6: Final answer
   x = 886,503.91