Finding the Fourth Proportional to 1,371,196.48, 1,892,026.20 and 861,538

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371,196.48 : 1,892,026.20 = 861,538 : x
2. Step 2: Convert to fraction form
   1,371,196.48/1,892,026.20 = 861,538/x
3. Step 3: Cross multiply
   1,371,196.48x = 1,892,026.20 × 861,538
4. Step 4: Simplify right side
   1,371,196.48x = 1,630,052,468,295.60
5. Step 5: Solve for x
   x = 1,630,052,468,295.60/1,371,196.48
6. Step 6: Final answer
   x = 1,188,781.11