Finding the Fourth Proportional to 1,217,105.74, 1,679,476.67 and 673,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,105.74 : 1,679,476.67 = 673,155.10 : x
2. Step 2: Convert to fraction form
   1,217,105.74/1,679,476.67 = 673,155.10/x
3. Step 3: Cross multiply
   1,217,105.74x = 1,679,476.67 × 673,155.10
4. Step 4: Simplify right side
   1,217,105.74x = 1,130,548,285,741.52
5. Step 5: Solve for x
   x = 1,130,548,285,741.52/1,217,105.74
6. Step 6: Final answer
   x = 928,882.55