Finding the Fourth Proportional to 880,747.94, 1,215,434.49 and 518,185.46

Step by Step Solution

1. Step 1: Write the proportion equation
   880,747.94 : 1,215,434.49 = 518,185.46 : x
2. Step 2: Convert to fraction form
   880,747.94/1,215,434.49 = 518,185.46/x
3. Step 3: Cross multiply
   880,747.94x = 1,215,434.49 × 518,185.46
4. Step 4: Simplify right side
   880,747.94x = 629,820,480,300.52
5. Step 5: Solve for x
   x = 629,820,480,300.52/880,747.94
6. Step 6: Final answer
   x = 715,097.31