Finding the Fourth Proportional to 816,141.42, 1,224,419.49 and 479,466.72

Step by Step Solution

1. Step 1: Write the proportion equation
   816,141.42 : 1,224,419.49 = 479,466.72 : x
2. Step 2: Convert to fraction form
   816,141.42/1,224,419.49 = 479,466.72/x
3. Step 3: Cross multiply
   816,141.42x = 1,224,419.49 × 479,466.72
4. Step 4: Simplify right side
   816,141.42x = 587,068,396,774.37
5. Step 5: Solve for x
   x = 587,068,396,774.37/816,141.42
6. Step 6: Final answer
   x = 719,321.90