Finding the Fourth Proportional to 1,057,615.52, 1,586,086.72 and 347,479.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057,615.52 : 1,586,086.72 = 347,479.61 : x
2. Step 2: Convert to fraction form
   1,057,615.52/1,586,086.72 = 347,479.61/x
3. Step 3: Cross multiply
   1,057,615.52x = 1,586,086.72 × 347,479.61
4. Step 4: Simplify right side
   1,057,615.52x = 551,132,786,092.65
5. Step 5: Solve for x
   x = 551,132,786,092.65/1,057,615.52
6. Step 6: Final answer
   x = 521,108.83