Finding the Fourth Proportional to 1,249,806.69, 1,724,764.82 and 766,638.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,249,806.69 : 1,724,764.82 = 766,638.27 : x
2. Step 2: Convert to fraction form
   1,249,806.69/1,724,764.82 = 766,638.27/x
3. Step 3: Cross multiply
   1,249,806.69x = 1,724,764.82 × 766,638.27
4. Step 4: Simplify right side
   1,249,806.69x = 1,322,270,713,928.47
5. Step 5: Solve for x
   x = 1,322,270,713,928.47/1,249,806.69
6. Step 6: Final answer
   x = 1,057,980.19