Finding the Fourth Proportional to 1,031,196.96, 1,546,869.42 and 431,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031,196.96 : 1,546,869.42 = 431,554.50 : x
2. Step 2: Convert to fraction form
   1,031,196.96/1,546,869.42 = 431,554.50/x
3. Step 3: Cross multiply
   1,031,196.96x = 1,546,869.42 × 431,554.50
4. Step 4: Simplify right side
   1,031,196.96x = 667,558,459,113.39
5. Step 5: Solve for x
   x = 667,558,459,113.39/1,031,196.96
6. Step 6: Final answer
   x = 647,362.71