Finding the Fourth Proportional to 926,540.59, 1,278,566.76 and 518,573.83

Step by Step Solution

1. Step 1: Write the proportion equation
   926,540.59 : 1,278,566.76 = 518,573.83 : x
2. Step 2: Convert to fraction form
   926,540.59/1,278,566.76 = 518,573.83/x
3. Step 3: Cross multiply
   926,540.59x = 1,278,566.76 × 518,573.83
4. Step 4: Simplify right side
   926,540.59x = 663,031,261,643.89
5. Step 5: Solve for x
   x = 663,031,261,643.89/926,540.59
6. Step 6: Final answer
   x = 715,598.72