Finding the Fourth Proportional to 899,436.66, 1,241,225.83 and 491,538.69

Step by Step Solution

1. Step 1: Write the proportion equation
   899,436.66 : 1,241,225.83 = 491,538.69 : x
2. Step 2: Convert to fraction form
   899,436.66/1,241,225.83 = 491,538.69/x
3. Step 3: Cross multiply
   899,436.66x = 1,241,225.83 × 491,538.69
4. Step 4: Simplify right side
   899,436.66x = 610,110,519,086.79
5. Step 5: Solve for x
   x = 610,110,519,086.79/899,436.66
6. Step 6: Final answer
   x = 678,325.17