Finding the Fourth Proportional to 825,404.55, 1,138,575.69 and 518,995.83

Step by Step Solution

1. Step 1: Write the proportion equation
   825,404.55 : 1,138,575.69 = 518,995.83 : x
2. Step 2: Convert to fraction form
   825,404.55/1,138,575.69 = 518,995.83/x
3. Step 3: Cross multiply
   825,404.55x = 1,138,575.69 × 518,995.83
4. Step 4: Simplify right side
   825,404.55x = 590,916,035,249.37
5. Step 5: Solve for x
   x = 590,916,035,249.37/825,404.55
6. Step 6: Final answer
   x = 715,910.80