Finding the Fourth Proportional to 1,115,035.61, 1,672,485.71 and 395,412.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,115,035.61 : 1,672,485.71 = 395,412.89 : x
2. Step 2: Convert to fraction form
   1,115,035.61/1,672,485.71 = 395,412.89/x
3. Step 3: Cross multiply
   1,115,035.61x = 1,672,485.71 × 395,412.89
4. Step 4: Simplify right side
   1,115,035.61x = 661,322,397,735.31
5. Step 5: Solve for x
   x = 661,322,397,735.31/1,115,035.61
6. Step 6: Final answer
   x = 593,095.32