Finding the Fourth Proportional to 1,389,066.30, 2,083,680.12 and 536,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,066.30 : 2,083,680.12 = 536,142.78 : x
2. Step 2: Convert to fraction form
   1,389,066.30/2,083,680.12 = 536,142.78/x
3. Step 3: Cross multiply
   1,389,066.30x = 2,083,680.12 × 536,142.78
4. Step 4: Simplify right side
   1,389,066.30x = 1,117,150,052,167.53
5. Step 5: Solve for x
   x = 1,117,150,052,167.53/1,389,066.30
6. Step 6: Final answer
   x = 804,245.31