Finding the Fourth Proportional to 685,793.34, 946,384.80 and 379,868.71

Step by Step Solution

1. Step 1: Write the proportion equation
   685,793.34 : 946,384.80 = 379,868.71 : x
2. Step 2: Convert to fraction form
   685,793.34/946,384.80 = 379,868.71/x
3. Step 3: Cross multiply
   685,793.34x = 946,384.80 × 379,868.71
4. Step 4: Simplify right side
   685,793.34x = 359,501,973,139.61
5. Step 5: Solve for x
   x = 359,501,973,139.61/685,793.34
6. Step 6: Final answer
   x = 524,213.28