Finding the Fourth Proportional to 1,147,860.69, 1,583,619.89 and 717,977.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147,860.69 : 1,583,619.89 = 717,977.49 : x
2. Step 2: Convert to fraction form
   1,147,860.69/1,583,619.89 = 717,977.49/x
3. Step 3: Cross multiply
   1,147,860.69x = 1,583,619.89 × 717,977.49
4. Step 4: Simplify right side
   1,147,860.69x = 1,137,003,433,736.28
5. Step 5: Solve for x
   x = 1,137,003,433,736.28/1,147,860.69
6. Step 6: Final answer
   x = 990,541.31