Finding the Fourth Proportional to 1,284,266.51, 1,772,300.82 and 774,870.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284,266.51 : 1,772,300.82 = 774,870.47 : x
2. Step 2: Convert to fraction form
   1,284,266.51/1,772,300.82 = 774,870.47/x
3. Step 3: Cross multiply
   1,284,266.51x = 1,772,300.82 × 774,870.47
4. Step 4: Simplify right side
   1,284,266.51x = 1,373,303,570,065.17
5. Step 5: Solve for x
   x = 1,373,303,570,065.17/1,284,266.51
6. Step 6: Final answer
   x = 1,069,329.12