Finding the Fourth Proportional to 758,959.30, 1,139,751.15 and 404,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   758,959.30 : 1,139,751.15 = 404,665.30 : x
2. Step 2: Convert to fraction form
   758,959.30/1,139,751.15 = 404,665.30/x
3. Step 3: Cross multiply
   758,959.30x = 1,139,751.15 × 404,665.30
4. Step 4: Simplify right side
   758,959.30x = 461,217,741,040.10
5. Step 5: Solve for x
   x = 461,217,741,040.10/758,959.30
6. Step 6: Final answer
   x = 607,697.59