Finding the Fourth Proportional to 1,363.88, 1,881.34 and 839.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.88 : 1,881.34 = 839.52 : x
2. Step 2: Convert to fraction form
   1,363.88/1,881.34 = 839.52/x
3. Step 3: Cross multiply
   1,363.88x = 1,881.34 × 839.52
4. Step 4: Simplify right side
   1,363.88x = 1,579,422.56
5. Step 5: Solve for x
   x = 1,579,422.56/1,363.88
6. Step 6: Final answer
   x = 1,158.04