Finding the Fourth Proportional to 1,150,498.49, 1,587,695.78 and 641,233.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150,498.49 : 1,587,695.78 = 641,233.67 : x
2. Step 2: Convert to fraction form
   1,150,498.49/1,587,695.78 = 641,233.67/x
3. Step 3: Cross multiply
   1,150,498.49x = 1,587,695.78 × 641,233.67
4. Step 4: Simplify right side
   1,150,498.49x = 1,018,083,985,517.52
5. Step 5: Solve for x
   x = 1,018,083,985,517.52/1,150,498.49
6. Step 6: Final answer
   x = 884,906.85