Finding the Fourth Proportional to 1,216,505.72, 1,678,767.72 and 700,360.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,505.72 : 1,678,767.72 = 700,360.76 : x
2. Step 2: Convert to fraction form
   1,216,505.72/1,678,767.72 = 700,360.76/x
3. Step 3: Cross multiply
   1,216,505.72x = 1,678,767.72 × 700,360.76
4. Step 4: Simplify right side
   1,216,505.72x = 1,175,743,036,242.67
5. Step 5: Solve for x
   x = 1,175,743,036,242.67/1,216,505.72
6. Step 6: Final answer
   x = 966,491.99