Finding the Fourth Proportional to 1,049,900.42, 1,575,100.92 and 339,928.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049,900.42 : 1,575,100.92 = 339,928.67 : x
2. Step 2: Convert to fraction form
   1,049,900.42/1,575,100.92 = 339,928.67/x
3. Step 3: Cross multiply
   1,049,900.42x = 1,575,100.92 × 339,928.67
4. Step 4: Simplify right side
   1,049,900.42x = 535,421,960,851.38
5. Step 5: Solve for x
   x = 535,421,960,851.38/1,049,900.42
6. Step 6: Final answer
   x = 509,974.04