Finding the Fourth Proportional to 550,648.72, 760,162.22 and 369,294.31

Step by Step Solution

1. Step 1: Write the proportion equation
   550,648.72 : 760,162.22 = 369,294.31 : x
2. Step 2: Convert to fraction form
   550,648.72/760,162.22 = 369,294.31/x
3. Step 3: Cross multiply
   550,648.72x = 760,162.22 × 369,294.31
4. Step 4: Simplify right side
   550,648.72x = 280,723,582,522.97
5. Step 5: Solve for x
   x = 280,723,582,522.97/550,648.72
6. Step 6: Final answer
   x = 509,805.20