Finding the Fourth Proportional to 641,742.34, 885,326.37 and 386,951.98

Step by Step Solution

1. Step 1: Write the proportion equation
   641,742.34 : 885,326.37 = 386,951.98 : x
2. Step 2: Convert to fraction form
   641,742.34/885,326.37 = 386,951.98/x
3. Step 3: Cross multiply
   641,742.34x = 885,326.37 × 386,951.98
4. Step 4: Simplify right side
   641,742.34x = 342,578,788,153.33
5. Step 5: Solve for x
   x = 342,578,788,153.33/641,742.34
6. Step 6: Final answer
   x = 533,826.07