Finding the Fourth Proportional to 785,909, 1,084,554.42 and 428,213

Step by Step Solution

1. Step 1: Write the proportion equation
   785,909 : 1,084,554.42 = 428,213 : x
2. Step 2: Convert to fraction form
   785,909/1,084,554.42 = 428,213/x
3. Step 3: Cross multiply
   785,909x = 1,084,554.42 × 428,213
4. Step 4: Simplify right side
   785,909x = 464,420,301,851.46
5. Step 5: Solve for x
   x = 464,420,301,851.46/785,909
6. Step 6: Final answer
   x = 590,933.94