Finding the Fourth Proportional to 762,196.78, 1,143,338.91 and 229,662.28

Step by Step Solution

1. Step 1: Write the proportion equation
   762,196.78 : 1,143,338.91 = 229,662.28 : x
2. Step 2: Convert to fraction form
   762,196.78/1,143,338.91 = 229,662.28/x
3. Step 3: Cross multiply
   762,196.78x = 1,143,338.91 × 229,662.28
4. Step 4: Simplify right side
   762,196.78x = 262,581,820,883.32
5. Step 5: Solve for x
   x = 262,581,820,883.32/762,196.78
6. Step 6: Final answer
   x = 344,506.60