Finding the Fourth Proportional to 641,978.56, 885,929.00 and 370,044.65

Step by Step Solution

1. Step 1: Write the proportion equation
   641,978.56 : 885,929.00 = 370,044.65 : x
2. Step 2: Convert to fraction form
   641,978.56/885,929.00 = 370,044.65/x
3. Step 3: Cross multiply
   641,978.56x = 885,929.00 × 370,044.65
4. Step 4: Simplify right side
   641,978.56x = 327,833,287,094.45
5. Step 5: Solve for x
   x = 327,833,287,094.45/641,978.56
6. Step 6: Final answer
   x = 510,660.80