Finding the Fourth Proportional to 646,942.84, 892,784.78 and 375,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   646,942.84 : 892,784.78 = 375,172.10 : x
2. Step 2: Convert to fraction form
   646,942.84/892,784.78 = 375,172.10/x
3. Step 3: Cross multiply
   646,942.84x = 892,784.78 × 375,172.10
4. Step 4: Simplify right side
   646,942.84x = 334,947,934,420.85
5. Step 5: Solve for x
   x = 334,947,934,420.85/646,942.84
6. Step 6: Final answer
   x = 517,739.61