Finding the Fourth Proportional to 899,007.18, 1,240,667.58 and 517,034.22

Step by Step Solution

1. Step 1: Write the proportion equation
   899,007.18 : 1,240,667.58 = 517,034.22 : x
2. Step 2: Convert to fraction form
   899,007.18/1,240,667.58 = 517,034.22/x
3. Step 3: Cross multiply
   899,007.18x = 1,240,667.58 × 517,034.22
4. Step 4: Simplify right side
   899,007.18x = 641,467,594,504.59
5. Step 5: Solve for x
   x = 641,467,594,504.59/899,007.18
6. Step 6: Final answer
   x = 713,528.89