Finding the Fourth Proportional to 1,008,189.31, 1,391,815.56 and 683,219.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,189.31 : 1,391,815.56 = 683,219.13 : x
2. Step 2: Convert to fraction form
   1,008,189.31/1,391,815.56 = 683,219.13/x
3. Step 3: Cross multiply
   1,008,189.31x = 1,391,815.56 × 683,219.13
4. Step 4: Simplify right side
   1,008,189.31x = 950,915,012,607.57
5. Step 5: Solve for x
   x = 950,915,012,607.57/1,008,189.31
6. Step 6: Final answer
   x = 943,190.93