Finding the Fourth Proportional to 1,363.32, 1,881.90 and 839.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.32 : 1,881.90 = 839.25 : x
2. Step 2: Convert to fraction form
   1,363.32/1,881.90 = 839.25/x
3. Step 3: Cross multiply
   1,363.32x = 1,881.90 × 839.25
4. Step 4: Simplify right side
   1,363.32x = 1,579,384.58
5. Step 5: Solve for x
   x = 1,579,384.58/1,363.32
6. Step 6: Final answer
   x = 1,158.48