Finding the Fourth Proportional to 1,689,142.72, 2,531,925.60 and 789,828.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,142.72 : 2,531,925.60 = 789,828.88 : x
2. Step 2: Convert to fraction form
   1,689,142.72/2,531,925.60 = 789,828.88/x
3. Step 3: Cross multiply
   1,689,142.72x = 2,531,925.60 × 789,828.88
4. Step 4: Simplify right side
   1,689,142.72x = 1,999,787,960,891.33
5. Step 5: Solve for x
   x = 1,999,787,960,891.33/1,689,142.72
6. Step 6: Final answer
   x = 1,183,907.04