Finding the Fourth Proportional to 1,116,861.59, 1,676,134.38 and 818,107.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,861.59 : 1,676,134.38 = 818,107.67 : x
2. Step 2: Convert to fraction form
   1,116,861.59/1,676,134.38 = 818,107.67/x
3. Step 3: Cross multiply
   1,116,861.59x = 1,676,134.38 × 818,107.67
4. Step 4: Simplify right side
   1,116,861.59x = 1,371,258,392,228.69
5. Step 5: Solve for x
   x = 1,371,258,392,228.69/1,116,861.59
6. Step 6: Final answer
   x = 1,227,778.27