Finding the Fourth Proportional to 1,389,061.31, 2,083,672.62 and 536,137.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,061.31 : 2,083,672.62 = 536,137.79 : x
2. Step 2: Convert to fraction form
   1,389,061.31/2,083,672.62 = 536,137.79/x
3. Step 3: Cross multiply
   1,389,061.31x = 2,083,672.62 × 536,137.79
4. Step 4: Simplify right side
   1,389,061.31x = 1,117,135,623,151.95
5. Step 5: Solve for x
   x = 1,117,135,623,151.95/1,389,061.31
6. Step 6: Final answer
   x = 804,237.81