Finding the Fourth Proportional to 947,780.82, 1,307,934.45 and 518,061.06

Step by Step Solution

1. Step 1: Write the proportion equation
   947,780.82 : 1,307,934.45 = 518,061.06 : x
2. Step 2: Convert to fraction form
   947,780.82/1,307,934.45 = 518,061.06/x
3. Step 3: Cross multiply
   947,780.82x = 1,307,934.45 × 518,061.06
4. Step 4: Simplify right side
   947,780.82x = 677,589,907,577.52
5. Step 5: Solve for x
   x = 677,589,907,577.52/947,780.82
6. Step 6: Final answer
   x = 714,922.58