Finding the Fourth Proportional to 686,767.50, 947,797.59 and 385,019.82

Step by Step Solution

1. Step 1: Write the proportion equation
   686,767.50 : 947,797.59 = 385,019.82 : x
2. Step 2: Convert to fraction form
   686,767.50/947,797.59 = 385,019.82/x
3. Step 3: Cross multiply
   686,767.50x = 947,797.59 × 385,019.82
4. Step 4: Simplify right side
   686,767.50x = 364,920,857,498.23
5. Step 5: Solve for x
   x = 364,920,857,498.23/686,767.50
6. Step 6: Final answer
   x = 531,360.11