Finding the Fourth Proportional to 806,789.82, 1,209,902.58 and 238,019.88

Step by Step Solution

1. Step 1: Write the proportion equation
   806,789.82 : 1,209,902.58 = 238,019.88 : x
2. Step 2: Convert to fraction form
   806,789.82/1,209,902.58 = 238,019.88/x
3. Step 3: Cross multiply
   806,789.82x = 1,209,902.58 × 238,019.88
4. Step 4: Simplify right side
   806,789.82x = 287,980,866,903.29
5. Step 5: Solve for x
   x = 287,980,866,903.29/806,789.82
6. Step 6: Final answer
   x = 356,946.58