Finding the Fourth Proportional to 970,788.03, 1,456,838.15 and 339,707.31

Step by Step Solution

1. Step 1: Write the proportion equation
   970,788.03 : 1,456,838.15 = 339,707.31 : x
2. Step 2: Convert to fraction form
   970,788.03/1,456,838.15 = 339,707.31/x
3. Step 3: Cross multiply
   970,788.03x = 1,456,838.15 × 339,707.31
4. Step 4: Simplify right side
   970,788.03x = 494,898,567,343.34
5. Step 5: Solve for x
   x = 494,898,567,343.34/970,788.03
6. Step 6: Final answer
   x = 509,790.55