Finding the Fourth Proportional to 1,123,087.80, 1,683,647.55 and 673,987.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,087.80 : 1,683,647.55 = 673,987.35 : x
2. Step 2: Convert to fraction form
   1,123,087.80/1,683,647.55 = 673,987.35/x
3. Step 3: Cross multiply
   1,123,087.80x = 1,683,647.55 × 673,987.35
4. Step 4: Simplify right side
   1,123,087.80x = 1,134,757,150,558.49
5. Step 5: Solve for x
   x = 1,134,757,150,558.49/1,123,087.80
6. Step 6: Final answer
   x = 1,010,390.42