Finding the Fourth Proportional to 683,338.42, 1,025,009.55 and 402,469.30

Step by Step Solution

1. Step 1: Write the proportion equation
   683,338.42 : 1,025,009.55 = 402,469.30 : x
2. Step 2: Convert to fraction form
   683,338.42/1,025,009.55 = 402,469.30/x
3. Step 3: Cross multiply
   683,338.42x = 1,025,009.55 × 402,469.30
4. Step 4: Simplify right side
   683,338.42x = 412,534,876,081.82
5. Step 5: Solve for x
   x = 412,534,876,081.82/683,338.42
6. Step 6: Final answer
   x = 603,705.08