Finding the Fourth Proportional to 1,165,501.86, 1,608,330.16 and 642,196.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165,501.86 : 1,608,330.16 = 642,196.24 : x
2. Step 2: Convert to fraction form
   1,165,501.86/1,608,330.16 = 642,196.24/x
3. Step 3: Cross multiply
   1,165,501.86x = 1,608,330.16 × 642,196.24
4. Step 4: Simplify right side
   1,165,501.86x = 1,032,863,581,430.60
5. Step 5: Solve for x
   x = 1,032,863,581,430.60/1,165,501.86
6. Step 6: Final answer
   x = 886,196.42