Finding the Fourth Proportional to 1,049,910.48, 1,575,116.55 and 339,939.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049,910.48 : 1,575,116.55 = 339,939.27 : x
2. Step 2: Convert to fraction form
   1,049,910.48/1,575,116.55 = 339,939.27/x
3. Step 3: Cross multiply
   1,049,910.48x = 1,575,116.55 × 339,939.27
4. Step 4: Simplify right side
   1,049,910.48x = 535,443,970,171.92
5. Step 5: Solve for x
   x = 535,443,970,171.92/1,049,910.48
6. Step 6: Final answer
   x = 509,990.12