Finding the Fourth Proportional to 1,252,429.55, 1,728,356.06 and 679,469.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,252,429.55 : 1,728,356.06 = 679,469.72 : x
2. Step 2: Convert to fraction form
   1,252,429.55/1,728,356.06 = 679,469.72/x
3. Step 3: Cross multiply
   1,252,429.55x = 1,728,356.06 × 679,469.72
4. Step 4: Simplify right side
   1,252,429.55x = 1,174,365,611,620.06
5. Step 5: Solve for x
   x = 1,174,365,611,620.06/1,252,429.55
6. Step 6: Final answer
   x = 937,669.99