Finding the Fourth Proportional to 1,327,314.72, 1,990,990.80 and 330,042.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,327,314.72 : 1,990,990.80 = 330,042.72 : x
2. Step 2: Convert to fraction form
   1,327,314.72/1,990,990.80 = 330,042.72/x
3. Step 3: Cross multiply
   1,327,314.72x = 1,990,990.80 × 330,042.72
4. Step 4: Simplify right side
   1,327,314.72x = 657,112,019,126.98
5. Step 5: Solve for x
   x = 657,112,019,126.98/1,327,314.72
6. Step 6: Final answer
   x = 495,068.73