Finding the Fourth Proportional to 1,224,758.98, 1,690,071.68 and 680,861.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,758.98 : 1,690,071.68 = 680,861.67 : x
2. Step 2: Convert to fraction form
   1,224,758.98/1,690,071.68 = 680,861.67/x
3. Step 3: Cross multiply
   1,224,758.98x = 1,690,071.68 × 680,861.67
4. Step 4: Simplify right side
   1,224,758.98x = 1,150,705,021,828.89
5. Step 5: Solve for x
   x = 1,150,705,021,828.89/1,224,758.98
6. Step 6: Final answer
   x = 939,535.89