Finding the Fourth Proportional to 1,216,146.99, 1,678,111.50 and 699,704.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,146.99 : 1,678,111.50 = 699,704.76 : x
2. Step 2: Convert to fraction form
   1,216,146.99/1,678,111.50 = 699,704.76/x
3. Step 3: Cross multiply
   1,216,146.99x = 1,678,111.50 × 699,704.76
4. Step 4: Simplify right side
   1,216,146.99x = 1,174,182,604,360.74
5. Step 5: Solve for x
   x = 1,174,182,604,360.74/1,216,146.99
6. Step 6: Final answer
   x = 965,493.99