Finding the Fourth Proportional to 646,784.72, 892,084.76 and 474,644.53

Step by Step Solution

1. Step 1: Write the proportion equation
   646,784.72 : 892,084.76 = 474,644.53 : x
2. Step 2: Convert to fraction form
   646,784.72/892,084.76 = 474,644.53/x
3. Step 3: Cross multiply
   646,784.72x = 892,084.76 × 474,644.53
4. Step 4: Simplify right side
   646,784.72x = 423,423,152,152.16
5. Step 5: Solve for x
   x = 423,423,152,152.16/646,784.72
6. Step 6: Final answer
   x = 654,658.56