Finding the Fourth Proportional to 1,189,443.89, 1,641,457.05 and 673,197.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,443.89 : 1,641,457.05 = 673,197.76 : x
2. Step 2: Convert to fraction form
   1,189,443.89/1,641,457.05 = 673,197.76/x
3. Step 3: Cross multiply
   1,189,443.89x = 1,641,457.05 × 673,197.76
4. Step 4: Simplify right side
   1,189,443.89x = 1,105,025,209,196.21
5. Step 5: Solve for x
   x = 1,105,025,209,196.21/1,189,443.89
6. Step 6: Final answer
   x = 929,026.76