Finding the Fourth Proportional to 1,137,870.48, 1,707,148.20 and 339,151.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137,870.48 : 1,707,148.20 = 339,151.96 : x
2. Step 2: Convert to fraction form
   1,137,870.48/1,707,148.20 = 339,151.96/x
3. Step 3: Cross multiply
   1,137,870.48x = 1,707,148.20 × 339,151.96
4. Step 4: Simplify right side
   1,137,870.48x = 578,982,661,446.23
5. Step 5: Solve for x
   x = 578,982,661,446.23/1,137,870.48
6. Step 6: Final answer
   x = 508,830.02