Finding the Fourth Proportional to 906,196.98, 1,359,207.72 and 275,116.26

Step by Step Solution

1. Step 1: Write the proportion equation
   906,196.98 : 1,359,207.72 = 275,116.26 : x
2. Step 2: Convert to fraction form
   906,196.98/1,359,207.72 = 275,116.26/x
3. Step 3: Cross multiply
   906,196.98x = 1,359,207.72 × 275,116.26
4. Step 4: Simplify right side
   906,196.98x = 373,940,144,489.53
5. Step 5: Solve for x
   x = 373,940,144,489.53/906,196.98
6. Step 6: Final answer
   x = 412,647.75