Finding the Fourth Proportional to 647,602, 893,690.76 and 379,330

Step by Step Solution

1. Step 1: Write the proportion equation
   647,602 : 893,690.76 = 379,330 : x
2. Step 2: Convert to fraction form
   647,602/893,690.76 = 379,330/x
3. Step 3: Cross multiply
   647,602x = 893,690.76 × 379,330
4. Step 4: Simplify right side
   647,602x = 339,003,715,990.80
5. Step 5: Solve for x
   x = 339,003,715,990.80/647,602
6. Step 6: Final answer
   x = 523,475.40