Finding the Fourth Proportional to 1,363.48, 1,881.50 and 839.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.48 : 1,881.50 = 839.56 : x
2. Step 2: Convert to fraction form
   1,363.48/1,881.50 = 839.56/x
3. Step 3: Cross multiply
   1,363.48x = 1,881.50 × 839.56
4. Step 4: Simplify right side
   1,363.48x = 1,579,632.14
5. Step 5: Solve for x
   x = 1,579,632.14/1,363.48
6. Step 6: Final answer
   x = 1,158.53