Finding the Fourth Proportional to 1,052,436.30, 1,578,819.42 and 342,297.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052,436.30 : 1,578,819.42 = 342,297.96 : x
2. Step 2: Convert to fraction form
   1,052,436.30/1,578,819.42 = 342,297.96/x
3. Step 3: Cross multiply
   1,052,436.30x = 1,578,819.42 × 342,297.96
4. Step 4: Simplify right side
   1,052,436.30x = 540,426,666,674.38
5. Step 5: Solve for x
   x = 540,426,666,674.38/1,052,436.30
6. Step 6: Final answer
   x = 513,500.60