Finding the Fourth Proportional to 745,150.34, 1,028,248.83 and 422,860.43

Step by Step Solution

1. Step 1: Write the proportion equation
   745,150.34 : 1,028,248.83 = 422,860.43 : x
2. Step 2: Convert to fraction form
   745,150.34/1,028,248.83 = 422,860.43/x
3. Step 3: Cross multiply
   745,150.34x = 1,028,248.83 × 422,860.43
4. Step 4: Simplify right side
   745,150.34x = 434,805,737,259.55
5. Step 5: Solve for x
   x = 434,805,737,259.55/745,150.34
6. Step 6: Final answer
   x = 583,514.11