Finding the Fourth Proportional to 1,275,300.42, 1,913,202.90 and 364,491.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,275,300.42 : 1,913,202.90 = 364,491.06 : x
2. Step 2: Convert to fraction form
   1,275,300.42/1,913,202.90 = 364,491.06/x
3. Step 3: Cross multiply
   1,275,300.42x = 1,913,202.90 × 364,491.06
4. Step 4: Simplify right side
   1,275,300.42x = 697,345,353,016.07
5. Step 5: Solve for x
   x = 697,345,353,016.07/1,275,300.42
6. Step 6: Final answer
   x = 546,808.69